39977861315 has 16 divisors (see below), whose sum is σ = 56101824768. Its totient is φ = 26775868896.

The previous prime is 39977861311. The next prime is 39977861323. The reversal of 39977861315 is 51316877993.

39977861315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39977861315 - 2² = 39977861311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39977861311) 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, 13280177 + ... + 13283186.

It is an arithmetic number, because the mean of its divisors is an integer number (3506364048).

Almost surely, 2^39977861315 is an apocalyptic number.

39977861315 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

39977861315 is a deficient number, since it is larger than the sum of its proper divisors (16123963453).

39977861315 is a wasteful number, since it uses less digits than its factorization.

39977861315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26563418.

The product of its digits is 8573040, while the sum is 59.

The spelling of 39977861315 in words is "thirty-nine billion, nine hundred seventy-seven million, eight hundred sixty-one thousand, three hundred fifteen".