55566466466555 has 16 divisors (see below), whose sum is σ = 72741701196288. Its totient is φ = 40411895004000.

The previous prime is 55566466466447. The next prime is 55566466466587.

55566466466555 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-55566466466555 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51005390 + ... + 52083420.

It is an arithmetic number, because the mean of its divisors is an integer number (4546356324768).

Almost surely, 2^{55566466466555} is an apocalyptic number.

55566466466555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55566466466555 is a deficient number, since it is larger than the sum of its proper divisors (17175234729733).

55566466466555 is a wasteful number, since it uses less digits than its factorization.

55566466466555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015218.

The product of its digits is 11664000000, while the sum is 74.

The spelling of 55566466466555 in words is "fifty-five trillion, five hundred sixty-six billion, four hundred sixty-six million, four hundred sixty-six thousand, five hundred fifty-five".