15639240675 has 12 divisors (see below), whose sum is σ = 25856878040. Its totient is φ = 8340928320.

The previous prime is 15639240637. The next prime is 15639240691. The reversal of 15639240675 is 57604293651.

It is not a de Polignac number, because 15639240675 - 2¹⁵ = 15639207907 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104261530 + ... + 104261679.

Almost surely, 2^15639240675 is an apocalyptic number.

15639240675 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15639240675 is a deficient number, since it is larger than the sum of its proper divisors (10217637365).

15639240675 is a wasteful number, since it uses less digits than its factorization.

15639240675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208523222 (or 208523217 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 48.

The spelling of 15639240675 in words is "fifteen billion, six hundred thirty-nine million, two hundred forty thousand, six hundred seventy-five".