39679561677 has 24 divisors (see below), whose sum is σ = 64782962400. Its totient is φ = 21480663456.

The previous prime is 39679561661. The next prime is 39679561681. The reversal of 39679561677 is 77616597693.

It is not a de Polignac number, because 39679561677 - 2⁴ = 39679561661 is a prime.

It is a super-2 number, since 2×39679561677² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39679561687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7100602 + ... + 7106187.

It is an arithmetic number, because the mean of its divisors is an integer number (2699290100).

Almost surely, 2^39679561677 is an apocalyptic number.

It is an amenable number.

39679561677 is a deficient number, since it is larger than the sum of its proper divisors (25103400723).

39679561677 is a wasteful number, since it uses less digits than its factorization.

39679561677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14206825 (or 14206818 counting only the distinct ones).

The product of its digits is 90016920, while the sum is 66.

The spelling of 39679561677 in words is "thirty-nine billion, six hundred seventy-nine million, five hundred sixty-one thousand, six hundred seventy-seven".