72604418891 has 2 divisors, whose sum is σ = 72604418892. Its totient is φ = 72604418890.

The previous prime is 72604418741. The next prime is 72604418903. The reversal of 72604418891 is 19881440627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72604418891 - 2³⁴ = 55424549707 is a prime.

It is not a weakly prime, because it can be changed into another prime (72624418891) 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, 36302209445 + 36302209446.

It is an arithmetic number, because the mean of its divisors is an integer number (36302209446).

Almost surely, 2^72604418891 is an apocalyptic number.

72604418891 is a deficient number, since it is larger than the sum of its proper divisors (1).

72604418891 is an equidigital number, since it uses as much as digits as its factorization.

72604418891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 72604418891 in words is "seventy-two billion, six hundred four million, four hundred eighteen thousand, eight hundred ninety-one".