66168138324 has 48 divisors (see below), whose sum is σ = 163457743680. Its totient is φ = 20774407680.

The previous prime is 66168138233. The next prime is 66168138329. The reversal of 66168138324 is 42383186166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66168138329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 799317 + ... + 878204.

It is an arithmetic number, because the mean of its divisors is an integer number (3405369660).

Almost surely, 2^66168138324 is an apocalyptic number.

It is an amenable number.

66168138324 is an abundant number, since it is smaller than the sum of its proper divisors (97289605356).

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

66168138324 is a wasteful number, since it uses less digits than its factorization.

66168138324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677720 (or 1677718 counting only the distinct ones).

The product of its digits is 995328, while the sum is 48.

The spelling of 66168138324 in words is "sixty-six billion, one hundred sixty-eight million, one hundred thirty-eight thousand, three hundred twenty-four".