55656606065657 has 2 divisors, whose sum is σ = 55656606065658. Its totient is φ = 55656606065656.

The previous prime is 55656606065639. The next prime is 55656606065693. The reversal of 55656606065657 is 75656060665655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55496257075561 + 160348990096 = 7449581^2 + 400436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55656606065657 is a prime.

It is a super-3 number, since 3×55656606065657³ (a number of 42 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (55656606005657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27828303032828 + 27828303032829.

It is an arithmetic number, because the mean of its divisors is an integer number (27828303032829).

Almost surely, 2^{55656606065657} is an apocalyptic number.

It is an amenable number.

55656606065657 is a deficient number, since it is larger than the sum of its proper divisors (1).

55656606065657 is an equidigital number, since it uses as much as digits as its factorization.

55656606065657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1020600000, while the sum is 68.

The spelling of 55656606065657 in words is "fifty-five trillion, six hundred fifty-six billion, six hundred six million, sixty-five thousand, six hundred fifty-seven".