39320012817 has 10 divisors (see below), whose sum is σ = 58737303218. Its totient is φ = 26213341824.

The previous prime is 39320012713. The next prime is 39320012843. The reversal of 39320012817 is 71821002393.

It can be written as a sum of positive squares in only one way, i.e., 27995647761 + 11324365056 = 167319^2 + 106416^2 .

It is not a de Polignac number, because 39320012817 - 2⁷ = 39320012689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39320012857) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 242716048 + ... + 242716209.

Almost surely, 2^39320012817 is an apocalyptic number.

It is an amenable number.

39320012817 is a deficient number, since it is larger than the sum of its proper divisors (19417290401).

39320012817 is an equidigital number, since it uses as much as digits as its factorization.

39320012817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485432269 (or 485432260 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The spelling of 39320012817 in words is "thirty-nine billion, three hundred twenty million, twelve thousand, eight hundred seventeen".