55166705672 has 32 divisors (see below), whose sum is σ = 111838164480. Its totient is φ = 25360104000.

The previous prime is 55166705663. The next prime is 55166705677. The reversal of 55166705672 is 27650766155.

It is a self number, because there is not a number n which added to its sum of digits gives 55166705672.

It is not an unprimeable number, because it can be changed into a prime (55166705677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1030568 + ... + 1082775.

It is an arithmetic number, because the mean of its divisors is an integer number (3494942640).

Almost surely, 2^55166705672 is an apocalyptic number.

55166705672 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55166705672 is an abundant number, since it is smaller than the sum of its proper divisors (56671458808).

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

55166705672 is a wasteful number, since it uses less digits than its factorization.

55166705672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113613 (or 2113609 counting only the distinct ones).

The product of its (nonzero) digits is 2646000, while the sum is 50.

The spelling of 55166705672 in words is "fifty-five billion, one hundred sixty-six million, seven hundred five thousand, six hundred seventy-two".