72136111163125 has 20 divisors (see below), whose sum is σ = 90639302798044. Its totient is φ = 57390055200000.

The previous prime is 72136111163093. The next prime is 72136111163143. The reversal of 72136111163125 is 52136111163127.

It can be written as a sum of positive squares in 10 ways, for example, as 63585919950084 + 8550191213041 = 7974078^2 + 2924071^2 .

It is not a de Polignac number, because 72136111163125 - 2⁵ = 72136111163093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 318720516 + ... + 318946765.

Almost surely, 2^{72136111163125} is an apocalyptic number.

It is an amenable number.

72136111163125 is a deficient number, since it is larger than the sum of its proper divisors (18503191634919).

72136111163125 is an equidigital number, since it uses as much as digits as its factorization.

72136111163125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637667482 (or 637667467 counting only the distinct ones).

The product of its digits is 45360, while the sum is 40.

The spelling of 72136111163125 in words is "seventy-two trillion, one hundred thirty-six billion, one hundred eleven million, one hundred sixty-three thousand, one hundred twenty-five".