611610113657 has 2 divisors, whose sum is σ = 611610113658. Its totient is φ = 611610113656.

The previous prime is 611610113617. The next prime is 611610113669. The reversal of 611610113657 is 756311016116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 575005240681 + 36604872976 = 758291^2 + 191324^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611610113657 is a prime.

It is a super-2 number, since 2×611610113657² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 611610113657.

It is not a weakly prime, because it can be changed into another prime (611610113617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305805056828 + 305805056829.

It is an arithmetic number, because the mean of its divisors is an integer number (305805056829).

Almost surely, 2^611610113657 is an apocalyptic number.

It is an amenable number.

611610113657 is a deficient number, since it is larger than the sum of its proper divisors (1).

611610113657 is an equidigital number, since it uses as much as digits as its factorization.

611610113657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 38.

The spelling of 611610113657 in words is "six hundred eleven billion, six hundred ten million, one hundred thirteen thousand, six hundred fifty-seven".