72700943591 has 2 divisors, whose sum is σ = 72700943592. Its totient is φ = 72700943590.

The previous prime is 72700943563. The next prime is 72700943621. The reversal of 72700943591 is 19534900727.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72700943591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72700943551) by changing a digit.

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 as a sum of consecutive naturals, namely, 36350471795 + 36350471796.

It is an arithmetic number, because the mean of its divisors is an integer number (36350471796).

Almost surely, 2^72700943591 is an apocalyptic number.

72700943591 is a deficient number, since it is larger than the sum of its proper divisors (1).

72700943591 is an equidigital number, since it uses as much as digits as its factorization.

72700943591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 476280, while the sum is 47.

The spelling of 72700943591 in words is "seventy-two billion, seven hundred million, nine hundred forty-three thousand, five hundred ninety-one".