166657077416418 has 16 divisors (see below), whose sum is σ = 333315003166176. Its totient is φ = 55552217749920.

The previous prime is 166657077416407. The next prime is 166657077416419. The reversal of 166657077416418 is 814614770756661.

It is not an unprimeable number, because it can be changed into a prime (166657077416419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32778988 + ... + 37520343.

It is an arithmetic number, because the mean of its divisors is an integer number (20832187697886).

Almost surely, 2^{166657077416418} is an apocalyptic number.

166657077416418 is an abundant number, since it is smaller than the sum of its proper divisors (166657925749758).

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

166657077416418 is a wasteful number, since it uses less digits than its factorization.

166657077416418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70694449.

The product of its (nonzero) digits is 284497920, while the sum is 69.

The spelling of 166657077416418 in words is "one hundred sixty-six trillion, six hundred fifty-seven billion, seventy-seven million, four hundred sixteen thousand, four hundred eighteen".