15969138772 has 24 divisors (see below), whose sum is σ = 29614284000. Its totient is φ = 7513556256.

The previous prime is 15969138739. The next prime is 15969138793. The reversal of 15969138772 is 27783196951.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 693778 + ... + 716425.

It is an arithmetic number, because the mean of its divisors is an integer number (1233928500).

Almost surely, 2^15969138772 is an apocalyptic number.

It is an amenable number.

15969138772 is a deficient number, since it is larger than the sum of its proper divisors (13645145228).

15969138772 is a wasteful number, since it uses less digits than its factorization.

15969138772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410375 (or 1410373 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 58.

The spelling of 15969138772 in words is "fifteen billion, nine hundred sixty-nine million, one hundred thirty-eight thousand, seven hundred seventy-two".