72813250639 has 2 divisors, whose sum is σ = 72813250640. Its totient is φ = 72813250638.

The previous prime is 72813250621. The next prime is 72813250729. The reversal of 72813250639 is 93605231827.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72813250639 - 2¹⁷ = 72813119567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72813250439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36406625319 + 36406625320.

It is an arithmetic number, because the mean of its divisors is an integer number (36406625320).

Almost surely, 2^72813250639 is an apocalyptic number.

72813250639 is a deficient number, since it is larger than the sum of its proper divisors (1).

72813250639 is an equidigital number, since it uses as much as digits as its factorization.

72813250639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 72813250639 in words is "seventy-two billion, eight hundred thirteen million, two hundred fifty thousand, six hundred thirty-nine".