479666857861139 has 64 divisors (see below), whose sum is σ = 532835951303040. Its totient is φ = 431553675571200.

The previous prime is 479666857861127. The next prime is 479666857861223. The reversal of 479666857861139 is 931168758666974.

It is a de Polignac number, because none of the positive numbers 2^k-479666857861139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (479666857861439) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 171248430539 + ... + 171248433339.

It is an arithmetic number, because the mean of its divisors is an integer number (8325561739110).

Almost surely, 2^{479666857861139} is an apocalyptic number.

479666857861139 is a deficient number, since it is larger than the sum of its proper divisors (53169093441901).

479666857861139 is a wasteful number, since it uses less digits than its factorization.

479666857861139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6089 (or 6063 counting only the distinct ones).

The product of its digits is 19752284160, while the sum is 86.

The spelling of 479666857861139 in words is "four hundred seventy-nine trillion, six hundred sixty-six billion, eight hundred fifty-seven million, eight hundred sixty-one thousand, one hundred thirty-nine".