72904330591 has 2 divisors, whose sum is σ = 72904330592. Its totient is φ = 72904330590.

The previous prime is 72904330567. The next prime is 72904330643. The reversal of 72904330591 is 19503340927.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72904330591 - 2⁵ = 72904330559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72904330531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36452165295 + 36452165296.

It is an arithmetic number, because the mean of its divisors is an integer number (36452165296).

Almost surely, 2^72904330591 is an apocalyptic number.

72904330591 is a deficient number, since it is larger than the sum of its proper divisors (1).

72904330591 is an equidigital number, since it uses as much as digits as its factorization.

72904330591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 43.

The spelling of 72904330591 in words is "seventy-two billion, nine hundred four million, three hundred thirty thousand, five hundred ninety-one".