72663712021272 has 64 divisors (see below), whose sum is σ = 182451355632000. Its totient is φ = 24115641423104.

The previous prime is 72663712021259. The next prime is 72663712021289. The reversal of 72663712021272 is 27212021736627.

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, 83103979 + ... + 83973797.

It is an arithmetic number, because the mean of its divisors is an integer number (2850802431750).

Almost surely, 2^{72663712021272} is an apocalyptic number.

It is an amenable number.

72663712021272 is an abundant number, since it is smaller than the sum of its proper divisors (109787643610728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72663712021272 is a wasteful number, since it uses less digits than its factorization.

72663712021272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885000 (or 884996 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 48.

Adding to 72663712021272 its reverse (27212021736627), we get a palindrome (99875733757899).

The spelling of 72663712021272 in words is "seventy-two trillion, six hundred sixty-three billion, seven hundred twelve million, twenty-one thousand, two hundred seventy-two".