70646777631 has 12 divisors (see below), whose sum is σ = 104418493608. Its totient is φ = 46002552624.

The previous prime is 70646777599. The next prime is 70646777671. The reversal of 70646777631 is 13677764607.

It is not a de Polignac number, because 70646777631 - 2⁵ = 70646777599 is a prime.

It is a super-2 number, since 2×70646777631² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70646777671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91274520 + ... + 91275293.

It is an arithmetic number, because the mean of its divisors is an integer number (8701541134).

Almost surely, 2^70646777631 is an apocalyptic number.

70646777631 is a deficient number, since it is larger than the sum of its proper divisors (33771715977).

70646777631 is a wasteful number, since it uses less digits than its factorization.

70646777631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182549862 (or 182549859 counting only the distinct ones).

The product of its (nonzero) digits is 6223392, while the sum is 54.

The spelling of 70646777631 in words is "seventy billion, six hundred forty-six million, seven hundred seventy-seven thousand, six hundred thirty-one".