55112166636 has 48 divisors (see below), whose sum is σ = 130466488320. Its totient is φ = 18105292800.

The previous prime is 55112166589. The next prime is 55112166661. The reversal of 55112166636 is 63666121155.

It is a super-2 number, since 2×55112166636² (a number of 22 digits) contains 22 as substring.

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, 110380 + ... + 349868.

It is an arithmetic number, because the mean of its divisors is an integer number (2718051840).

Almost surely, 2^55112166636 is an apocalyptic number.

It is an amenable number.

55112166636 is an abundant number, since it is smaller than the sum of its proper divisors (75354321684).

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

55112166636 is a wasteful number, since it uses less digits than its factorization.

55112166636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239774 (or 239772 counting only the distinct ones).

The product of its digits is 194400, while the sum is 42.

The spelling of 55112166636 in words is "fifty-five billion, one hundred twelve million, one hundred sixty-six thousand, six hundred thirty-six".