166136240512 has 32 divisors (see below), whose sum is σ = 361063139400. Its totient is φ = 75516472320.

The previous prime is 166136240509. The next prime is 166136240513. The reversal of 166136240512 is 215042631661.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×166136240512² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166136240513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58995837 + ... + 58998652.

Almost surely, 2^166136240512 is an apocalyptic number.

It is an amenable number.

166136240512 is an abundant number, since it is smaller than the sum of its proper divisors (194926898888).

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

166136240512 is a wasteful number, since it uses less digits than its factorization.

166136240512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117994514 (or 117994502 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 166136240512 in words is "one hundred sixty-six billion, one hundred thirty-six million, two hundred forty thousand, five hundred twelve".