166416124032550 has 24 divisors (see below), whose sum is σ = 353753132229936. Its totient is φ = 57056956811040.

The previous prime is 166416124032541. The next prime is 166416124032589. The reversal of 166416124032550 is 55230421614661.

It is a self number, because there is not a number n which added to its sum of digits gives 166416124032550.

It is a congruent number.

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, 237737319697 + ... + 237737320396.

It is an arithmetic number, because the mean of its divisors is an integer number (14739713842914).

Almost surely, 2^{166416124032550} is an apocalyptic number.

166416124032550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166416124032550 is an abundant number, since it is smaller than the sum of its proper divisors (187337008197386).

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

166416124032550 is a wasteful number, since it uses less digits than its factorization.

166416124032550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475474640112 (or 475474640107 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 166416124032550 in words is "one hundred sixty-six trillion, four hundred sixteen billion, one hundred twenty-four million, thirty-two thousand, five hundred fifty".