72994369536 has 624 divisors, whose sum is σ = 244723489920. Its totient is φ = 21552168960.

The previous prime is 72994369493. The next prime is 72994369559. The reversal of 72994369536 is 63596349927.

72994369536 is a `hidden beast` number, since 7 + 2 + 9 + 94 + 3 + 6 + 9 + 536 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 645967816 + ... + 645967928.

It is an arithmetic number, because the mean of its divisors is an integer number (392185080).

Almost surely, 2^72994369536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72994369536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122361744960).

72994369536 is an abundant number, since it is smaller than the sum of its proper divisors (171729120384).

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

72994369536 is a wasteful number, since it uses less digits than its factorization.

72994369536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 188 counting only the distinct ones).

The product of its digits is 66134880, while the sum is 63.

The spelling of 72994369536 in words is "seventy-two billion, nine hundred ninety-four million, three hundred sixty-nine thousand, five hundred thirty-six".