166512072772 has 48 divisors (see below), whose sum is σ = 296037685440. Its totient is φ = 81941853312.

The previous prime is 166512072761. The next prime is 166512072799. The reversal of 166512072772 is 277270215661.

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, 45705583 + ... + 45709225.

It is an arithmetic number, because the mean of its divisors is an integer number (6167451780).

Almost surely, 2^166512072772 is an apocalyptic number.

It is an amenable number.

166512072772 is a deficient number, since it is larger than the sum of its proper divisors (129525612668).

166512072772 is a wasteful number, since it uses less digits than its factorization.

166512072772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4420 (or 4418 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 46.

The spelling of 166512072772 in words is "one hundred sixty-six billion, five hundred twelve million, seventy-two thousand, seven hundred seventy-two".