166912659776 has 28 divisors (see below), whose sum is σ = 336160859808. Its totient is φ = 82210710912.

The previous prime is 166912659707. The next prime is 166912659787. The reversal of 166912659776 is 677956219661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19458476 + ... + 19467051.

Almost surely, 2^166912659776 is an apocalyptic number.

166912659776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166912659776 is an abundant number, since it is smaller than the sum of its proper divisors (169248200032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166912659776 is an equidigital number, since it uses as much as digits as its factorization.

166912659776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38925606 (or 38925596 counting only the distinct ones).

The product of its digits is 51438240, while the sum is 65.

The spelling of 166912659776 in words is "one hundred sixty-six billion, nine hundred twelve million, six hundred fifty-nine thousand, seven hundred seventy-six".