856920017760 has 96 divisors (see below), whose sum is σ = 2772252114912. Its totient is φ = 222336000000.

The previous prime is 856920017743. The next prime is 856920017879. The reversal of 856920017760 is 67710029658.

It is a tau number, because it is divible by the number of its divisors (96).

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, 24107241 + ... + 24142760.

It is an arithmetic number, because the mean of its divisors is an integer number (28877626197).

Almost surely, 2^856920017760 is an apocalyptic number.

856920017760 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

856920017760 is an abundant number, since it is smaller than the sum of its proper divisors (1915332097152).

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

856920017760 is a wasteful number, since it uses less digits than its factorization.

856920017760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48250056 (or 48250048 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 51.

The spelling of 856920017760 in words is "eight hundred fifty-six billion, nine hundred twenty million, seventeen thousand, seven hundred sixty".