851928839136 has 192 divisors, whose sum is σ = 2603235317760. Its totient is φ = 270713456640.

The previous prime is 851928839129. The next prime is 851928839141. The reversal of 851928839136 is 631938829158.

851928839136 is a `hidden beast` number, since 8 + 51 + 92 + 88 + 391 + 36 = 666.

It is a super-2 number, since 2×851928839136² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1557160 + ... + 2031896.

It is an arithmetic number, because the mean of its divisors is an integer number (13558517280).

Almost surely, 2^851928839136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 851928839136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1301617658880).

851928839136 is an abundant number, since it is smaller than the sum of its proper divisors (1751306478624).

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

851928839136 is a wasteful number, since it uses less digits than its factorization.

851928839136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474854 (or 474840 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 63.

The spelling of 851928839136 in words is "eight hundred fifty-one billion, nine hundred twenty-eight million, eight hundred thirty-nine thousand, one hundred thirty-six".