72190561057 has 2 divisors, whose sum is σ = 72190561058. Its totient is φ = 72190561056.

The previous prime is 72190561043. The next prime is 72190561067. The reversal of 72190561057 is 75016509127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72107823841 + 82737216 = 268529^2 + 9096^2 .

It is a cyclic number.

It is not a de Polignac number, because 72190561057 - 2¹⁹ = 72190036769 is a prime.

It is a super-2 number, since 2×72190561057² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72190561007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36095280528 + 36095280529.

It is an arithmetic number, because the mean of its divisors is an integer number (36095280529).

Almost surely, 2^72190561057 is an apocalyptic number.

It is an amenable number.

72190561057 is a deficient number, since it is larger than the sum of its proper divisors (1).

72190561057 is an equidigital number, since it uses as much as digits as its factorization.

72190561057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 132300, while the sum is 43.

The spelling of 72190561057 in words is "seventy-two billion, one hundred ninety million, five hundred sixty-one thousand, fifty-seven".