55566466466556 has 96 divisors (see below), whose sum is σ = 137169126017280. Its totient is φ = 17483782003200.

The previous prime is 55566466466447. The next prime is 55566466466587. The reversal of 55566466466556 is 65566466466555.

It is a happy number.

It is a super-2 number, since 2×55566466466556² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5267830 + ... + 11784861.

It is an arithmetic number, because the mean of its divisors is an integer number (1428845062680).

Almost surely, 2^{55566466466556} is an apocalyptic number.

It is an amenable number.

55566466466556 is an abundant number, since it is smaller than the sum of its proper divisors (81602659550724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55566466466556 is a wasteful number, since it uses less digits than its factorization.

55566466466556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17052955 (or 17052953 counting only the distinct ones).

The product of its digits is 13996800000, while the sum is 75.

Subtracting 55566466466556 from its reverse (65566466466555), we obtain a palindrome (9999999999999).

The spelling of 55566466466556 in words is "fifty-five trillion, five hundred sixty-six billion, four hundred sixty-six million, four hundred sixty-six thousand, five hundred fifty-six".