166611156004 has 12 divisors (see below), whose sum is σ = 301623644700. Its totient is φ = 80432971808.

The previous prime is 166611155993. The next prime is 166611156037. The reversal of 166611156004 is 400651116661.

It can be written as a sum of positive squares in 2 ways, for example, as 29207493604 + 137403662400 = 170902^2 + 370680^2 .

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, 718151419 + ... + 718151650.

It is an arithmetic number, because the mean of its divisors is an integer number (25135303725).

Almost surely, 2^166611156004 is an apocalyptic number.

It is an amenable number.

166611156004 is a deficient number, since it is larger than the sum of its proper divisors (135012488696).

166611156004 is a wasteful number, since it uses less digits than its factorization.

166611156004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436303102 (or 1436303100 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 166611156004 in words is "one hundred sixty-six billion, six hundred eleven million, one hundred fifty-six thousand, four".