55556166156 has 48 divisors (see below), whose sum is σ = 131501493984. Its totient is φ = 18251882496.

The previous prime is 55556166139. The next prime is 55556166191. The reversal of 55556166156 is 65166165555.

It is a junction number, because it is equal to n+sod(n) for n = 55556166099 and 55556166108.

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, 1233180 + ... + 1277436.

It is an arithmetic number, because the mean of its divisors is an integer number (2739614458).

Almost surely, 2^55556166156 is an apocalyptic number.

It is an amenable number.

55556166156 is an abundant number, since it is smaller than the sum of its proper divisors (75945327828).

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

55556166156 is a wasteful number, since it uses less digits than its factorization.

55556166156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45770 (or 45768 counting only the distinct ones).

The product of its digits is 4050000, while the sum is 51.

The spelling of 55556166156 in words is "fifty-five billion, five hundred fifty-six million, one hundred sixty-six thousand, one hundred fifty-six".