166001646152 has 32 divisors (see below), whose sum is σ = 313841848320. Its totient is φ = 82311062400.

The previous prime is 166001646137. The next prime is 166001646197. The reversal of 166001646152 is 251646100661.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2353868 + ... + 2423364.

It is an arithmetic number, because the mean of its divisors is an integer number (9807557760).

Almost surely, 2^166001646152 is an apocalyptic number.

It is an amenable number.

166001646152 is a deficient number, since it is larger than the sum of its proper divisors (147840202168).

166001646152 is a wasteful number, since it uses less digits than its factorization.

166001646152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71981 (or 71977 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 166001646152 in words is "one hundred sixty-six billion, one million, six hundred forty-six thousand, one hundred fifty-two".