5656518815641 has 2 divisors, whose sum is σ = 5656518815642. Its totient is φ = 5656518815640.

The previous prime is 5656518815611. The next prime is 5656518815699. The reversal of 5656518815641 is 1465188156565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5240230614025 + 416288201616 = 2289155^2 + 645204^2 .

It is a cyclic number.

It is not a de Polignac number, because 5656518815641 - 2⁷ = 5656518815513 is a prime.

It is a super-2 number, since 2×5656518815641² (a number of 26 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 5656518815641.

It is not a weakly prime, because it can be changed into another prime (5656518815611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2828259407820 + 2828259407821.

It is an arithmetic number, because the mean of its divisors is an integer number (2828259407821).

Almost surely, 2^{5656518815641} is an apocalyptic number.

It is an amenable number.

5656518815641 is a deficient number, since it is larger than the sum of its proper divisors (1).

5656518815641 is an equidigital number, since it uses as much as digits as its factorization.

5656518815641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560000, while the sum is 61.

The spelling of 5656518815641 in words is "five trillion, six hundred fifty-six billion, five hundred eighteen million, eight hundred fifteen thousand, six hundred forty-one".