55056646640659 has 2 divisors, whose sum is σ = 55056646640660. Its totient is φ = 55056646640658.

The previous prime is 55056646640623. The next prime is 55056646640729. The reversal of 55056646640659 is 95604664665055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55056646640659 - 2²³ = 55056638252051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55056646640594 and 55056646640603.

It is not a weakly prime, because it can be changed into another prime (55056646640759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27528323320329 + 27528323320330.

It is an arithmetic number, because the mean of its divisors is an integer number (27528323320330).

Almost surely, 2^{55056646640659} is an apocalyptic number.

55056646640659 is a deficient number, since it is larger than the sum of its proper divisors (1).

55056646640659 is an equidigital number, since it uses as much as digits as its factorization.

55056646640659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840000, while the sum is 67.

The spelling of 55056646640659 in words is "fifty-five trillion, fifty-six billion, six hundred forty-six million, six hundred forty thousand, six hundred fifty-nine".