55166555508 has 24 divisors (see below), whose sum is σ = 129200490720. Its totient is φ = 18320490720.

The previous prime is 55166555501. The next prime is 55166555527. The reversal of 55166555508 is 80555566155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55166555501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8541778 + ... + 8548233.

It is an arithmetic number, because the mean of its divisors is an integer number (5383353780).

Almost surely, 2^55166555508 is an apocalyptic number.

It is an amenable number.

55166555508 is an abundant number, since it is smaller than the sum of its proper divisors (74033935212).

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

55166555508 is a wasteful number, since it uses less digits than its factorization.

55166555508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17090287 (or 17090285 counting only the distinct ones).

The product of its (nonzero) digits is 4500000, while the sum is 51.

The spelling of 55166555508 in words is "fifty-five billion, one hundred sixty-six million, five hundred fifty-five thousand, five hundred eight".