858211878952 has 16 divisors (see below), whose sum is σ = 1609781083200. Its totient is φ = 428936923440.

The previous prime is 858211878911. The next prime is 858211878971. The reversal of 858211878952 is 259878112858.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21105424 + ... + 21146047.

It is an arithmetic number, because the mean of its divisors is an integer number (100611317700).

Almost surely, 2^858211878952 is an apocalyptic number.

It is an amenable number.

858211878952 is a deficient number, since it is larger than the sum of its proper divisors (751569204248).

858211878952 is a wasteful number, since it uses less digits than its factorization.

858211878952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42254016 (or 42254012 counting only the distinct ones).

The product of its digits is 25804800, while the sum is 64.

The spelling of 858211878952 in words is "eight hundred fifty-eight billion, two hundred eleven million, eight hundred seventy-eight thousand, nine hundred fifty-two".