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51259232096880 = 24351310631629599
BaseRepresentation
bin10111010011110101110000…
…10100100001001001110000
320201111100001000111122211020
423221322320110201021300
523204312401404100010
6301004055515215440
713540233361556223
oct1351727024411160
9221440030448736
1051259232096880
1115372a11214265
1258ba471147580
13227a956642502
14c92d626135ba
155dd584966470
hex2e9eb8521270

51259232096880 has 80 divisors (see below), whose sum is σ = 158904929433600. Its totient is φ = 13669015876864.

The previous prime is 51259232096869. The next prime is 51259232096887. The reversal of 51259232096880 is 8869023295215.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51259232096887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30640321 + ... + 32269919.

It is an arithmetic number, because the mean of its divisors is an integer number (1986311617920).

Almost surely, 251259232096880 is an apocalyptic number.

It is an amenable number.

51259232096880 is an abundant number, since it is smaller than the sum of its proper divisors (107645697336720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51259232096880 is a wasteful number, since it uses less digits than its factorization.

51259232096880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760678 (or 1760672 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 60.

The spelling of 51259232096880 in words is "fifty-one trillion, two hundred fifty-nine billion, two hundred thirty-two million, ninety-six thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 131063 262126 393189 524252 655315 786378 1048504 1310630 1572756 1629599 1965945 2097008 2621260 3145512 3259198 3931890 4888797 5242520 6291024 6518396 7863780 8147995 9777594 10485040 13036792 15727560 16295990 19555188 24443985 26073584 31455120 32591980 39110376 48887970 65183960 78220752 97775940 130367920 195551880 391103760 213580133737 427160267474 640740401211 854320534948 1067900668685 1281480802422 1708641069896 2135801337370 2562961604844 3203702006055 3417282139792 4271602674740 5125923209688 6407404012110 8543205349480 10251846419376 12814808024220 17086410698960 25629616048440 51259232096880