166556561150150 has 48 divisors (see below), whose sum is σ = 310451505331968. Its totient is φ = 66481536852000.

The previous prime is 166556561150131. The next prime is 166556561150159. The reversal of 166556561150150 is 51051165655661.

It is a junction number, because it is equal to n+sod(n) for n = 166556561150092 and 166556561150101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166556561150159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126722855 + ... + 128030445.

It is an arithmetic number, because the mean of its divisors is an integer number (6467739694416).

Almost surely, 2^{166556561150150} is an apocalyptic number.

166556561150150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166556561150150 is a deficient number, since it is larger than the sum of its proper divisors (143894944181818).

166556561150150 is a wasteful number, since it uses less digits than its factorization.

166556561150150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312997 (or 1312992 counting only the distinct ones).

The product of its (nonzero) digits is 4050000, while the sum is 53.

The spelling of 166556561150150 in words is "one hundred sixty-six trillion, five hundred fifty-six billion, five hundred sixty-one million, one hundred fifty thousand, one hundred fifty".