39720757422864 has 80 divisors (see below), whose sum is σ = 122369538419712. Its totient is φ = 10855362274944.

The previous prime is 39720757422851. The next prime is 39720757422877. The reversal of 39720757422864 is 46822475702793.

It is an interprime number because it is at equal distance from previous prime (39720757422851) and next prime (39720757422877).

It is a junction number, because it is equal to n+sod(n) for n = 39720757422795 and 39720757422804.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2569917054 + ... + 2569932509.

Almost surely, 2^{39720757422864} is an apocalyptic number.

It is an amenable number.

39720757422864 is an abundant number, since it is smaller than the sum of its proper divisors (82648780996848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39720757422864 is a wasteful number, since it uses less digits than its factorization.

39720757422864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5139849604 (or 5139849598 counting only the distinct ones).

The product of its (nonzero) digits is 284497920, while the sum is 66.

The spelling of 39720757422864 in words is "thirty-nine trillion, seven hundred twenty billion, seven hundred fifty-seven million, four hundred twenty-two thousand, eight hundred sixty-four".