851926311864 has 48 divisors (see below), whose sum is σ = 2307347406000. Its totient is φ = 283969655424.

The previous prime is 851926311781. The next prime is 851926311877. The reversal of 851926311864 is 468113629158.

It is a happy number.

851926311864 is a `hidden beast` number, since 8 + 519 + 2 + 6 + 3 + 118 + 6 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 851926311864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4861237 + ... + 5033435.

It is an arithmetic number, because the mean of its divisors is an integer number (48069737625).

Almost surely, 2^851926311864 is an apocalyptic number.

It is an amenable number.

851926311864 is an abundant number, since it is smaller than the sum of its proper divisors (1455421094136).

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

851926311864 is a wasteful number, since it uses less digits than its factorization.

851926311864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240924 (or 240917 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The spelling of 851926311864 in words is "eight hundred fifty-one billion, nine hundred twenty-six million, three hundred eleven thousand, eight hundred sixty-four".