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52821951889 = 7192393374931
BaseRepresentation
bin110001001100011011…
…110000010110010001
312001100020211011212111
4301030123300112101
51331134404430024
640133245425321
73546656116510
oct611433602621
9161306734774
1052821951889
11204466842a3
12a2a1b6b241
134c9a5b4945
1427b142a677
1515924b8a94
hexc4c6f0591

52821951889 has 32 divisors (see below), whose sum is σ = 64013414400. Its totient is φ = 42578161920.

The previous prime is 52821951881. The next prime is 52821951907. The reversal of 52821951889 is 98815912825.

It is not a de Polignac number, because 52821951889 - 23 = 52821951881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52821951881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10709754 + ... + 10714684.

It is an arithmetic number, because the mean of its divisors is an integer number (2000419200).

Almost surely, 252821951889 is an apocalyptic number.

It is an amenable number.

52821951889 is a deficient number, since it is larger than the sum of its proper divisors (11191462511).

52821951889 is a wasteful number, since it uses less digits than its factorization.

52821951889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5533.

The product of its digits is 4147200, while the sum is 58.

The spelling of 52821951889 in words is "fifty-two billion, eight hundred twenty-one million, nine hundred fifty-one thousand, eight hundred eighty-nine".

Divisors: 1 7 19 133 239 337 1673 2359 4541 4931 6403 31787 34517 44821 80543 93689 563801 655823 1178509 1530317 1661747 8249563 10712219 11632229 22391671 31573193 156741697 221012351 397157533 2780102731 7545993127 52821951889