72737372620 has 24 divisors (see below), whose sum is σ = 166634708688. Its totient is φ = 26449953600.

The previous prime is 72737372581. The next prime is 72737372633. The reversal of 72737372620 is 2627373727.

It is a happy 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, 165311991 + ... + 165312430.

It is an arithmetic number, because the mean of its divisors is an integer number (6943112862).

Almost surely, 2^72737372620 is an apocalyptic number.

It is an amenable number.

72737372620 is an abundant number, since it is smaller than the sum of its proper divisors (93897336068).

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

72737372620 is a wasteful number, since it uses less digits than its factorization.

72737372620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330624441 (or 330624439 counting only the distinct ones).

The product of its (nonzero) digits is 1037232, while the sum is 46.

The spelling of 72737372620 in words is "seventy-two billion, seven hundred thirty-seven million, three hundred seventy-two thousand, six hundred twenty".