55166166650 has 24 divisors (see below), whose sum is σ = 117267509280. Its totient is φ = 18914114160.

The previous prime is 55166166623. The next prime is 55166166677. The reversal of 55166166650 is 5666166155.

55166166650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55166166623) and next prime (55166166677).

It is a junction number, because it is equal to n+sod(n) for n = 55166166595 and 55166166604.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78808460 + ... + 78809159.

It is an arithmetic number, because the mean of its divisors is an integer number (4886146220).

Almost surely, 2^55166166650 is an apocalyptic number.

55166166650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55166166650 is an abundant number, since it is smaller than the sum of its proper divisors (62101342630).

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

55166166650 is a wasteful number, since it uses less digits than its factorization.

55166166650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157617638 (or 157617633 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 55166166650 in words is "fifty-five billion, one hundred sixty-six million, one hundred sixty-six thousand, six hundred fifty".