55565830656893 has 2 divisors, whose sum is σ = 55565830656894. Its totient is φ = 55565830656892.

The previous prime is 55565830656857. The next prime is 55565830656899. The reversal of 55565830656893 is 39865603856555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31734767423044 + 23831063233849 = 5633362^2 + 4881707^2 .

It is a cyclic number.

It is not a de Polignac number, because 55565830656893 - 2³⁰ = 55564756915069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55565830656893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55565830656899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27782915328446 + 27782915328447.

It is an arithmetic number, because the mean of its divisors is an integer number (27782915328447).

Almost surely, 2^{55565830656893} is an apocalyptic number.

It is an amenable number.

55565830656893 is a deficient number, since it is larger than the sum of its proper divisors (1).

55565830656893 is an equidigital number, since it uses as much as digits as its factorization.

55565830656893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3499200000, while the sum is 74.

The spelling of 55565830656893 in words is "fifty-five trillion, five hundred sixty-five billion, eight hundred thirty million, six hundred fifty-six thousand, eight hundred ninety-three".