72633290544 has 40 divisors (see below), whose sum is σ = 208484446320. Its totient is φ = 24211096704.

The previous prime is 72633290537. The next prime is 72633290557. The reversal of 72633290544 is 44509233627.

72633290544 is a `hidden beast` number, since 7 + 2 + 633 + 2 + 9 + 0 + 5 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 72633290544.

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, 84065877 + ... + 84066740.

It is an arithmetic number, because the mean of its divisors is an integer number (5212111158).

Almost surely, 2^72633290544 is an apocalyptic number.

It is an amenable number.

72633290544 is an abundant number, since it is smaller than the sum of its proper divisors (135851155776).

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

72633290544 is a wasteful number, since it uses less digits than its factorization.

72633290544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168132634 (or 168132622 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The spelling of 72633290544 in words is "seventy-two billion, six hundred thirty-three million, two hundred ninety thousand, five hundred forty-four".