72813566575 has 12 divisors (see below), whose sum is σ = 95599930320. Its totient is φ = 54824332160.

The previous prime is 72813566557. The next prime is 72813566629. The reversal of 72813566575 is 57566531827.

It is a de Polignac number, because none of the positive numbers 2^k-72813566575 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85662595 + ... + 85663444.

It is an arithmetic number, because the mean of its divisors is an integer number (7966660860).

Almost surely, 2^72813566575 is an apocalyptic number.

72813566575 is a deficient number, since it is larger than the sum of its proper divisors (22786363745).

72813566575 is a wasteful number, since it uses less digits than its factorization.

72813566575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171326066 (or 171326061 counting only the distinct ones).

The product of its digits is 10584000, while the sum is 55.

The spelling of 72813566575 in words is "seventy-two billion, eight hundred thirteen million, five hundred sixty-six thousand, five hundred seventy-five".