15971299129252 has 24 divisors (see below), whose sum is σ = 28012770567936. Its totient is φ = 7967669891328.

The previous prime is 15971299129249. The next prime is 15971299129327. The reversal of 15971299129252 is 25292199217951.

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, 842068 + ... + 5714164.

It is an arithmetic number, because the mean of its divisors is an integer number (1167198773664).

Almost surely, 2^{15971299129252} is an apocalyptic number.

It is an amenable number.

15971299129252 is a deficient number, since it is larger than the sum of its proper divisors (12041471438684).

15971299129252 is a wasteful number, since it uses less digits than its factorization.

15971299129252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4873947 (or 4873945 counting only the distinct ones).

The product of its digits is 18370800, while the sum is 64.

The spelling of 15971299129252 in words is "fifteen trillion, nine hundred seventy-one billion, two hundred ninety-nine million, one hundred twenty-nine thousand, two hundred fifty-two".