856077863853 has 16 divisors (see below), whose sum is σ = 1178282267136. Its totient is φ = 552296785920.

The previous prime is 856077863843. The next prime is 856077863881. The reversal of 856077863853 is 358368770658.

It is not a de Polignac number, because 856077863853 - 2³⁰ = 855004122029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856077863843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8823301 + ... + 8919797.

It is an arithmetic number, because the mean of its divisors is an integer number (73642641696).

Almost surely, 2^856077863853 is an apocalyptic number.

It is an amenable number.

856077863853 is a deficient number, since it is larger than the sum of its proper divisors (322204403283).

856077863853 is a wasteful number, since it uses less digits than its factorization.

856077863853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191924.

The product of its (nonzero) digits is 203212800, while the sum is 66.

The spelling of 856077863853 in words is "eight hundred fifty-six billion, seventy-seven million, eight hundred sixty-three thousand, eight hundred fifty-three".