657380632613 has 2 divisors, whose sum is σ = 657380632614. Its totient is φ = 657380632612.

The previous prime is 657380632603. The next prime is 657380632619. The reversal of 657380632613 is 316236083756.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 643528048804 + 13852583809 = 802202^2 + 117697^2 .

It is a cyclic number.

It is not a de Polignac number, because 657380632613 - 2⁶ = 657380632549 is a prime.

It is a super-2 number, since 2×657380632613² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (657380632619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328690316306 + 328690316307.

It is an arithmetic number, because the mean of its divisors is an integer number (328690316307).

Almost surely, 2^657380632613 is an apocalyptic number.

It is an amenable number.

657380632613 is a deficient number, since it is larger than the sum of its proper divisors (1).

657380632613 is an equidigital number, since it uses as much as digits as its factorization.

657380632613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 50.

The spelling of 657380632613 in words is "six hundred fifty-seven billion, three hundred eighty million, six hundred thirty-two thousand, six hundred thirteen".