166155564052 has 24 divisors (see below), whose sum is σ = 298600162560. Its totient is φ = 80870855520.

The previous prime is 166155563989. The next prime is 166155564191. The reversal of 166155564052 is 250465551661.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 166155563993 and 166155564011.

It is a congruent 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, 3680443 + ... + 3725314.

It is an arithmetic number, because the mean of its divisors is an integer number (12441673440).

Almost surely, 2^166155564052 is an apocalyptic number.

It is an amenable number.

166155564052 is a deficient number, since it is larger than the sum of its proper divisors (132444598508).

166155564052 is a wasteful number, since it uses less digits than its factorization.

166155564052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7405911 (or 7405909 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 46.

The spelling of 166155564052 in words is "one hundred sixty-six billion, one hundred fifty-five million, five hundred sixty-four thousand, fifty-two".