66168124872 has 64 divisors (see below), whose sum is σ = 174220243200. Its totient is φ = 20883965760.

The previous prime is 66168124831. The next prime is 66168124873. The reversal of 66168124872 is 27842186166.

It is not an unprimeable number, because it can be changed into a prime (66168124873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 831547 + ... + 907637.

It is an arithmetic number, because the mean of its divisors is an integer number (2722191300).

Almost surely, 2^66168124872 is an apocalyptic number.

It is an amenable number.

66168124872 is an abundant number, since it is smaller than the sum of its proper divisors (108052118328).

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

66168124872 is a wasteful number, since it uses less digits than its factorization.

66168124872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78026 (or 78022 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 51.

The spelling of 66168124872 in words is "sixty-six billion, one hundred sixty-eight million, one hundred twenty-four thousand, eight hundred seventy-two".