56613361501 has 2 divisors, whose sum is σ = 56613361502. Its totient is φ = 56613361500.

The previous prime is 56613361481. The next prime is 56613361507. The reversal of 56613361501 is 10516331665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33966121401 + 22647240100 = 184299^2 + 150490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56613361501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56613361507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28306680750 + 28306680751.

It is an arithmetic number, because the mean of its divisors is an integer number (28306680751).

Almost surely, 2^56613361501 is an apocalyptic number.

It is an amenable number.

56613361501 is a deficient number, since it is larger than the sum of its proper divisors (1).

56613361501 is an equidigital number, since it uses as much as digits as its factorization.

56613361501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48600, while the sum is 37.

The spelling of 56613361501 in words is "fifty-six billion, six hundred thirteen million, three hundred sixty-one thousand, five hundred one".