55166165056 has 14 divisors (see below), whose sum is σ = 109470358910. Its totient is φ = 27583082496.

The previous prime is 55166164957. The next prime is 55166165057. The reversal of 55166165056 is 65056166155.

It can be written as a sum of positive squares in only one way, i.e., 39235686400 + 15930478656 = 198080^2 + 126216^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55166164997 and 55166165015.

It is not an unprimeable number, because it can be changed into a prime (55166165057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430985601 + ... + 430985728.

Almost surely, 2^55166165056 is an apocalyptic number.

It is an amenable number.

55166165056 is a deficient number, since it is larger than the sum of its proper divisors (54304193854).

55166165056 is an equidigital number, since it uses as much as digits as its factorization.

55166165056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861971341 (or 861971331 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 55166165056 in words is "fifty-five billion, one hundred sixty-six million, one hundred sixty-five thousand, fifty-six".