72764444413 has 2 divisors, whose sum is σ = 72764444414. Its totient is φ = 72764444412.

The previous prime is 72764444407. The next prime is 72764444437. The reversal of 72764444413 is 31444446727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58118119929 + 14646324484 = 241077^2 + 121022^2 .

It is a cyclic number.

It is not a de Polignac number, because 72764444413 - 2¹⁷ = 72764313341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72764444213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36382222206 + 36382222207.

It is an arithmetic number, because the mean of its divisors is an integer number (36382222207).

Almost surely, 2^72764444413 is an apocalyptic number.

It is an amenable number.

72764444413 is a deficient number, since it is larger than the sum of its proper divisors (1).

72764444413 is an equidigital number, since it uses as much as digits as its factorization.

72764444413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1806336, while the sum is 46.

The spelling of 72764444413 in words is "seventy-two billion, seven hundred sixty-four million, four hundred forty-four thousand, four hundred thirteen".