166911838000 has 80 divisors (see below), whose sum is σ = 408455794656. Its totient is φ = 65960275200.

The previous prime is 166911837973. The next prime is 166911838057. The reversal of 166911838000 is 838119661.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336747 + ... + 668746.

Almost surely, 2^166911838000 is an apocalyptic number.

166911838000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166911838000 is an abundant number, since it is smaller than the sum of its proper divisors (241543956656).

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

166911838000 is a wasteful number, since it uses less digits than its factorization.

166911838000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005599 (or 1005583 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The spelling of 166911838000 in words is "one hundred sixty-six billion, nine hundred eleven million, eight hundred thirty-eight thousand".