855932379900 has 144 divisors (see below), whose sum is σ = 2782954212864. Its totient is φ = 201530545920.

The previous prime is 855932379859. The next prime is 855932380001. The reversal of 855932379900 is 9973239558.

It is a super-2 number, since 2×855932379900² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4681384 + ... + 4860783.

Almost surely, 2^855932379900 is an apocalyptic number.

It is an amenable number.

855932379900 is an abundant number, since it is smaller than the sum of its proper divisors (1927021832964).

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

855932379900 is a wasteful number, since it uses less digits than its factorization.

855932379900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9542220 (or 9542213 counting only the distinct ones).

The product of its (nonzero) digits is 18370800, while the sum is 60.

The spelling of 855932379900 in words is "eight hundred fifty-five billion, nine hundred thirty-two million, three hundred seventy-nine thousand, nine hundred".