39242644637 has 16 divisors (see below), whose sum is σ = 47530501632. Its totient is φ = 31628862720.

The previous prime is 39242644627. The next prime is 39242644681. The reversal of 39242644637 is 73644624293.

It is not a de Polignac number, because 39242644637 - 2²⁰ = 39241596061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39242644627) by changing a digit.

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, 20789 + ... + 280922.

It is an arithmetic number, because the mean of its divisors is an integer number (2970656352).

Almost surely, 2^39242644637 is an apocalyptic number.

It is an amenable number.

39242644637 is a deficient number, since it is larger than the sum of its proper divisors (8287856995).

39242644637 is a wasteful number, since it uses less digits than its factorization.

39242644637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302828.

The product of its digits is 5225472, while the sum is 50.

The spelling of 39242644637 in words is "thirty-nine billion, two hundred forty-two million, six hundred forty-four thousand, six hundred thirty-seven".