72130112121532 has 24 divisors (see below), whose sum is σ = 131162468390912. Its totient is φ = 34670530278000.

The previous prime is 72130112121523. The next prime is 72130112121581. The reversal of 72130112121532 is 23512121103127.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 72130112121494 and 72130112121503.

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, 1926121848 + ... + 1926159295.

Almost surely, 2^{72130112121532} is an apocalyptic number.

It is an amenable number.

72130112121532 is a deficient number, since it is larger than the sum of its proper divisors (59032356269380).

72130112121532 is a wasteful number, since it uses less digits than its factorization.

72130112121532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3852281329 (or 3852281327 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

Adding to 72130112121532 its reverse (23512121103127), we get a palindrome (95642233224659).

The spelling of 72130112121532 in words is "seventy-two trillion, one hundred thirty billion, one hundred twelve million, one hundred twenty-one thousand, five hundred thirty-two".