13287564125972 has 48 divisors (see below), whose sum is σ = 23930680987920. Its totient is φ = 6450975820800.

The previous prime is 13287564125903. The next prime is 13287564125999. The reversal of 13287564125972 is 27952146578231.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 3210532905616 + 10077031220356 = 1791796^2 + 3174434^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155496554 + ... + 155581982.

It is an arithmetic number, because the mean of its divisors is an integer number (498555853915).

Almost surely, 2^{13287564125972} is an apocalyptic number.

It is an amenable number.

13287564125972 is a deficient number, since it is larger than the sum of its proper divisors (10643116861948).

13287564125972 is a wasteful number, since it uses less digits than its factorization.

13287564125972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87612 (or 87610 counting only the distinct ones).

The product of its digits is 50803200, while the sum is 62.

The spelling of 13287564125972 in words is "thirteen trillion, two hundred eighty-seven billion, five hundred sixty-four million, one hundred twenty-five thousand, nine hundred seventy-two".