15970538409 has 32 divisors (see below), whose sum is σ = 25406304000. Its totient is φ = 8730457344.

The previous prime is 15970538387. The next prime is 15970538459. The reversal of 15970538409 is 90483507951.

It is not a de Polignac number, because 15970538409 - 2¹⁵ = 15970505641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15970538459) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53914 + ... + 186675.

It is an arithmetic number, because the mean of its divisors is an integer number (793947000).

Almost surely, 2^15970538409 is an apocalyptic number.

It is an amenable number.

15970538409 is a deficient number, since it is larger than the sum of its proper divisors (9435765591).

15970538409 is a wasteful number, since it uses less digits than its factorization.

15970538409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240737.

The product of its (nonzero) digits is 1360800, while the sum is 51.

The spelling of 15970538409 in words is "fifteen billion, nine hundred seventy million, five hundred thirty-eight thousand, four hundred nine".