72213757313 has 2 divisors, whose sum is σ = 72213757314. Its totient is φ = 72213757312.

The previous prime is 72213757303. The next prime is 72213757373. The reversal of 72213757313 is 31375731227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71239880464 + 973876849 = 266908^2 + 31207^2 .

It is a cyclic number.

It is not a de Polignac number, because 72213757313 - 2⁶ = 72213757249 is a prime.

It is not a weakly prime, because it can be changed into another prime (72213757303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36106878656 + 36106878657.

It is an arithmetic number, because the mean of its divisors is an integer number (36106878657).

Almost surely, 2^72213757313 is an apocalyptic number.

It is an amenable number.

72213757313 is a deficient number, since it is larger than the sum of its proper divisors (1).

72213757313 is an equidigital number, since it uses as much as digits as its factorization.

72213757313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 185220, while the sum is 41.

The spelling of 72213757313 in words is "seventy-two billion, two hundred thirteen million, seven hundred fifty-seven thousand, three hundred thirteen".