856074377720 has 16 divisors (see below), whose sum is σ = 1926167349960. Its totient is φ = 342429751072.

The previous prime is 856074377701. The next prime is 856074377731. The reversal of 856074377720 is 27773470658.

It is a congruent 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, 10700929682 + ... + 10700929761.

Almost surely, 2^856074377720 is an apocalyptic number.

It is an amenable number.

856074377720 is an abundant number, since it is smaller than the sum of its proper divisors (1070092972240).

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

856074377720 is a wasteful number, since it uses less digits than its factorization.

856074377720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21401859454 (or 21401859450 counting only the distinct ones).

The product of its (nonzero) digits is 13829760, while the sum is 56.

The spelling of 856074377720 in words is "eight hundred fifty-six billion, seventy-four million, three hundred seventy-seven thousand, seven hundred twenty".