166365260655656 has 32 divisors (see below), whose sum is σ = 314393126615040. Its totient is φ = 82527102237888.

The previous prime is 166365260655631. The next prime is 166365260655677. The reversal of 166365260655656 is 656556062563661.

166365260655656 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, 183660605 + ... + 184564211.

It is an arithmetic number, because the mean of its divisors is an integer number (9824785206720).

Almost surely, 2^{166365260655656} is an apocalyptic number.

It is an amenable number.

166365260655656 is a deficient number, since it is larger than the sum of its proper divisors (148027865959384).

166365260655656 is a wasteful number, since it uses less digits than its factorization.

166365260655656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084953 (or 1084949 counting only the distinct ones).

The product of its (nonzero) digits is 1049760000, while the sum is 68.

The spelling of 166365260655656 in words is "one hundred sixty-six trillion, three hundred sixty-five billion, two hundred sixty million, six hundred fifty-five thousand, six hundred fifty-six".