166177982940236 has 24 divisors (see below), whose sum is σ = 292906232646720. Its totient is φ = 82490498485200.

The previous prime is 166177982940217. The next prime is 166177982940271. The reversal of 166177982940236 is 632049289771661.

It is a self number, because there is not a number n which added to its sum of digits gives 166177982940236.

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, 64461131 + ... + 66989501.

It is an arithmetic number, because the mean of its divisors is an integer number (12204426360280).

Almost surely, 2^{166177982940236} is an apocalyptic number.

It is an amenable number.

166177982940236 is a deficient number, since it is larger than the sum of its proper divisors (126728249706484).

166177982940236 is a wasteful number, since it uses less digits than its factorization.

166177982940236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2646725 (or 2646723 counting only the distinct ones).

The product of its (nonzero) digits is 329204736, while the sum is 71.

The spelling of 166177982940236 in words is "one hundred sixty-six trillion, one hundred seventy-seven billion, nine hundred eighty-two million, nine hundred forty thousand, two hundred thirty-six".