166686325077056 has 56 divisors (see below), whose sum is σ = 334759723042080. Its totient is φ = 82337456812032.

The previous prime is 166686325077037. The next prime is 166686325077089. The reversal of 166686325077056 is 650770523686661.

166686325077056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307969040 + ... + 308509808.

It is an arithmetic number, because the mean of its divisors is an integer number (5977852197180).

Almost surely, 2^{166686325077056} is an apocalyptic number.

166686325077056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166686325077056 is an abundant number, since it is smaller than the sum of its proper divisors (168073397965024).

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

166686325077056 is an equidigital number, since it uses as much as digits as its factorization.

166686325077056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598891 (or 598881 counting only the distinct ones).

The product of its (nonzero) digits is 457228800, while the sum is 68.

The spelling of 166686325077056 in words is "one hundred sixty-six trillion, six hundred eighty-six billion, three hundred twenty-five million, seventy-seven thousand, fifty-six".