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12921290941580 = 2257175429113841
BaseRepresentation
bin1011110000000111100011…
…1101001110010010001100
31200202021002222112002012122
42330001320331032102030
53143200300440112310
643251543100152112
72502350430552020
oct274017075162214
950667088462178
1012921290941580
11413198597418a
121548296238638
1372961b139478
143295728d0380
151761a46b9555
hexbc078f4e48c

12921290941580 has 48 divisors (see below), whose sum is σ = 32835280516416. Its totient is φ = 4169559429120.

The previous prime is 12921290941577. The next prime is 12921290941607. The reversal of 12921290941580 is 8514909212921.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2714554541 + ... + 2714559300.

It is an arithmetic number, because the mean of its divisors is an integer number (684068344092).

Almost surely, 212921290941580 is an apocalyptic number.

12921290941580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12921290941580 is an abundant number, since it is smaller than the sum of its proper divisors (19913989574836).

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

12921290941580 is a wasteful number, since it uses less digits than its factorization.

12921290941580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5429113874 (or 5429113872 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 53.

The spelling of 12921290941580 in words is "twelve trillion, nine hundred twenty-one billion, two hundred ninety million, nine hundred forty-one thousand, five hundred eighty".

Divisors: 1 2 4 5 7 10 14 17 20 28 34 35 68 70 85 119 140 170 238 340 476 595 1190 2380 5429113841 10858227682 21716455364 27145569205 38003796887 54291138410 76007593774 92294935297 108582276820 152015187548 184589870594 190018984435 369179741188 380037968870 461474676485 646064547079 760075937740 922949352970 1292129094158 1845898705940 2584258188316 3230322735395 6460645470790 12921290941580