859553020856 has 64 divisors (see below), whose sum is σ = 1688052960000. Its totient is φ = 409548953088.

The previous prime is 859553020793. The next prime is 859553020861. The reversal of 859553020856 is 658020355958.

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, 54438995 + ... + 54454781.

It is an arithmetic number, because the mean of its divisors is an integer number (26375827500).

Almost surely, 2^859553020856 is an apocalyptic number.

It is an amenable number.

859553020856 is a deficient number, since it is larger than the sum of its proper divisors (828499939144).

859553020856 is a wasteful number, since it uses less digits than its factorization.

859553020856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16908 (or 16904 counting only the distinct ones).

The product of its (nonzero) digits is 12960000, while the sum is 56.

The spelling of 859553020856 in words is "eight hundred fifty-nine billion, five hundred fifty-three million, twenty thousand, eight hundred fifty-six".