166508881054 has 16 divisors (see below), whose sum is σ = 264551911056. Its totient is φ = 78328489600.

The previous prime is 166508881031. The next prime is 166508881057. The reversal of 166508881054 is 450188805661.

It is a junction number, because it is equal to n+sod(n) for n = 166508880992 and 166508881010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166508881057) 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, 800152 + ... + 986539.

It is an arithmetic number, because the mean of its divisors is an integer number (16534494441).

Almost surely, 2^166508881054 is an apocalyptic number.

166508881054 is a deficient number, since it is larger than the sum of its proper divisors (98043030002).

166508881054 is a wasteful number, since it uses less digits than its factorization.

166508881054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1789451.

The product of its (nonzero) digits is 1843200, while the sum is 52.

The spelling of 166508881054 in words is "one hundred sixty-six billion, five hundred eight million, eight hundred eighty-one thousand, fifty-four".