851838627952 has 80 divisors (see below), whose sum is σ = 1788423533568. Its totient is φ = 390724024320.

The previous prime is 851838627901. The next prime is 851838628007. The reversal of 851838627952 is 259726838158.

It is a super-2 number, since 2×851838627952² (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 15 ways as a sum of consecutive naturals, for example, 22366558 + ... + 22404610.

Almost surely, 2^851838627952 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 851838627952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (894211766784).

851838627952 is an abundant number, since it is smaller than the sum of its proper divisors (936584905616).

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

851838627952 is a wasteful number, since it uses less digits than its factorization.

851838627952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38738 (or 38732 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 64.

The spelling of 851838627952 in words is "eight hundred fifty-one billion, eight hundred thirty-eight million, six hundred twenty-seven thousand, nine hundred fifty-two".