66168124660 has 24 divisors (see below), whose sum is σ = 151585158816. Its totient is φ = 24061136160.

The previous prime is 66168124637. The next prime is 66168124681. The reversal of 66168124660 is 6642186166.

It is a self number, because there is not a number n which added to its sum of digits gives 66168124660.

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, 150381882 + ... + 150382321.

It is an arithmetic number, because the mean of its divisors is an integer number (6316048284).

Almost surely, 2^66168124660 is an apocalyptic number.

It is an amenable number.

66168124660 is an abundant number, since it is smaller than the sum of its proper divisors (85417034156).

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

66168124660 is a wasteful number, since it uses less digits than its factorization.

66168124660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300764223 (or 300764221 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 66168124660 in words is "sixty-six billion, one hundred sixty-eight million, one hundred twenty-four thousand, six hundred sixty".