166115771016 has 64 divisors (see below), whose sum is σ = 447301008000. Its totient is φ = 51104974848.

The previous prime is 166115770913. The next prime is 166115771047. The reversal of 166115771016 is 610177511661.

It is a happy number.

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, 2290885 + ... + 2362283.

It is an arithmetic number, because the mean of its divisors is an integer number (6989078250).

Almost surely, 2^166115771016 is an apocalyptic number.

It is an amenable number.

166115771016 is an abundant number, since it is smaller than the sum of its proper divisors (281185236984).

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

166115771016 is a wasteful number, since it uses less digits than its factorization.

166115771016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78878 (or 78874 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 42.

The spelling of 166115771016 in words is "one hundred sixty-six billion, one hundred fifteen million, seven hundred seventy-one thousand, sixteen".