856130471999 has 16 divisors (see below), whose sum is σ = 934812679680. Its totient is φ = 777590607360.

The previous prime is 856130471993. The next prime is 856130472007. The reversal of 856130471999 is 999174031658.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-856130471999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856130471993) 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, 100563167 + ... + 100571679.

It is an arithmetic number, because the mean of its divisors is an integer number (58425792480).

Almost surely, 2^856130471999 is an apocalyptic number.

856130471999 is a deficient number, since it is larger than the sum of its proper divisors (78682207681).

856130471999 is a wasteful number, since it uses less digits than its factorization.

856130471999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15790.

The product of its (nonzero) digits is 14696640, while the sum is 62.

The spelling of 856130471999 in words is "eight hundred fifty-six billion, one hundred thirty million, four hundred seventy-one thousand, nine hundred ninety-nine".