56565511523737 has 2 divisors, whose sum is σ = 56565511523738. Its totient is φ = 56565511523736.

The previous prime is 56565511523723. The next prime is 56565511523749. The reversal of 56565511523737 is 73732511556565.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43429932039321 + 13135579484416 = 6590139^2 + 3624304^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56565511523737 is a prime.

It is not a weakly prime, because it can be changed into another prime (56565511523767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28282755761868 + 28282755761869.

It is an arithmetic number, because the mean of its divisors is an integer number (28282755761869).

Almost surely, 2^{56565511523737} is an apocalyptic number.

It is an amenable number.

56565511523737 is a deficient number, since it is larger than the sum of its proper divisors (1).

56565511523737 is an equidigital number, since it uses as much as digits as its factorization.

56565511523737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 99225000, while the sum is 61.

The spelling of 56565511523737 in words is "fifty-six trillion, five hundred sixty-five billion, five hundred eleven million, five hundred twenty-three thousand, seven hundred thirty-seven".