39977312518 has 32 divisors (see below), whose sum is σ = 70881818112. Its totient is φ = 16670772000.

The previous prime is 39977312509. The next prime is 39977312533. The reversal of 39977312518 is 81521377993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 382158 + ... + 475393.

It is an arithmetic number, because the mean of its divisors is an integer number (2215056816).

Almost surely, 2^39977312518 is an apocalyptic number.

39977312518 is a deficient number, since it is larger than the sum of its proper divisors (30904505594).

39977312518 is a wasteful number, since it uses less digits than its factorization.

39977312518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857740.

The product of its digits is 2857680, while the sum is 55.

The spelling of 39977312518 in words is "thirty-nine billion, nine hundred seventy-seven million, three hundred twelve thousand, five hundred eighteen".