856710739746 has 64 divisors (see below), whose sum is σ = 2004198076800. Its totient is φ = 270513727488.

The previous prime is 856710739733. The next prime is 856710739837. The reversal of 856710739746 is 647937017658.

856710739746 is a `hidden beast` number, since 85 + 67 + 107 + 397 + 4 + 6 = 666.

It is a super-2 number, since 2×856710739746² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12228850 + ... + 12298706.

It is an arithmetic number, because the mean of its divisors is an integer number (31315594950).

Almost surely, 2^856710739746 is an apocalyptic number.

856710739746 is an abundant number, since it is smaller than the sum of its proper divisors (1147487337054).

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

856710739746 is a wasteful number, since it uses less digits than its factorization.

856710739746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81840 (or 81834 counting only the distinct ones).

The product of its (nonzero) digits is 53343360, while the sum is 63.

The spelling of 856710739746 in words is "eight hundred fifty-six billion, seven hundred ten million, seven hundred thirty-nine thousand, seven hundred forty-six".