215074753525613 has 2 divisors, whose sum is σ = 215074753525614. Its totient is φ = 215074753525612.

The previous prime is 215074753525609. The next prime is 215074753525661. The reversal of 215074753525613 is 316525357470512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114942349727689 + 100132403797924 = 10721117^2 + 10006618^2 .

It is a cyclic number.

It is not a de Polignac number, because 215074753525613 - 2² = 215074753525609 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215074753575613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107537376762806 + 107537376762807.

It is an arithmetic number, because the mean of its divisors is an integer number (107537376762807).

Almost surely, 2^{215074753525613} is an apocalyptic number.

It is an amenable number.

215074753525613 is a deficient number, since it is larger than the sum of its proper divisors (1).

215074753525613 is an equidigital number, since it uses as much as digits as its factorization.

215074753525613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26460000, while the sum is 56.

The spelling of 215074753525613 in words is "two hundred fifteen trillion, seventy-four billion, seven hundred fifty-three million, five hundred twenty-five thousand, six hundred thirteen".