72549765839 has 2 divisors, whose sum is σ = 72549765840. Its totient is φ = 72549765838.

The previous prime is 72549765829. The next prime is 72549765853. The reversal of 72549765839 is 93856794527.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72549765839 - 2⁸ = 72549765583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72549765829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36274882919 + 36274882920.

It is an arithmetic number, because the mean of its divisors is an integer number (36274882920).

Almost surely, 2^72549765839 is an apocalyptic number.

72549765839 is a deficient number, since it is larger than the sum of its proper divisors (1).

72549765839 is an equidigital number, since it uses as much as digits as its factorization.

72549765839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 114307200, while the sum is 65.

The spelling of 72549765839 in words is "seventy-two billion, five hundred forty-nine million, seven hundred sixty-five thousand, eight hundred thirty-nine".