55555550000017 has 2 divisors, whose sum is σ = 55555550000018. Its totient is φ = 55555550000016.

The previous prime is 55555549999853. The next prime is 55555550000023. The reversal of 55555550000017 is 71000005555555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52886652727041 + 2668897272976 = 7272321^2 + 1633676^2 .

It is a cyclic number.

It is not a de Polignac number, because 55555550000017 - 2¹⁵ = 55555549967249 is a prime.

It is not a weakly prime, because it can be changed into another prime (55555550009017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27777775000008 + 27777775000009.

It is an arithmetic number, because the mean of its divisors is an integer number (27777775000009).

Almost surely, 2^{55555550000017} is an apocalyptic number.

It is an amenable number.

55555550000017 is a deficient number, since it is larger than the sum of its proper divisors (1).

55555550000017 is an equidigital number, since it uses as much as digits as its factorization.

55555550000017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 546875, while the sum is 43.

The spelling of 55555550000017 in words is "fifty-five trillion, five hundred fifty-five billion, five hundred fifty million, seventeen", and thus it is an aban number.