166111511656808 has 64 divisors (see below), whose sum is σ = 328429639872000. Its totient is φ = 78545724449472.

The previous prime is 166111511656801. The next prime is 166111511656897. The reversal of 166111511656808 is 808656115111661.

166111511656808 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (166111511656801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 656890091 + ... + 657142917.

It is an arithmetic number, because the mean of its divisors is an integer number (5131713123000).

Almost surely, 2^{166111511656808} is an apocalyptic number.

It is an amenable number.

166111511656808 is a deficient number, since it is larger than the sum of its proper divisors (162318128215192).

166111511656808 is a wasteful number, since it uses less digits than its factorization.

166111511656808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260454 (or 260450 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 56.

The spelling of 166111511656808 in words is "one hundred sixty-six trillion, one hundred eleven billion, five hundred eleven million, six hundred fifty-six thousand, eight hundred eight".