5555660665555 has 48 divisors (see below), whose sum is σ = 9019030652352. Its totient is φ = 3196863648000.

The previous prime is 5555660665523. The next prime is 5555660665559.

5555660665555 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5555660665555 - 2⁵ = 5555660665523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5555660665559) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50400496 + ... + 50510605.

It is an arithmetic number, because the mean of its divisors is an integer number (187896471924).

Almost surely, 2^{5555660665555} is an apocalyptic number.

5555660665555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5555660665555 is a deficient number, since it is larger than the sum of its proper divisors (3463369986797).

5555660665555 is a wasteful number, since it uses less digits than its factorization.

5555660665555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100911148 (or 100911137 counting only the distinct ones).

The product of its (nonzero) digits is 506250000, while the sum is 64.

The spelling of 5555660665555 in words is "five trillion, five hundred fifty-five billion, six hundred sixty million, six hundred sixty-five thousand, five hundred fifty-five".