642232468176 has 80 divisors (see below), whose sum is σ = 1788933625920. Its totient is φ = 197365570560.

The previous prime is 642232468151. The next prime is 642232468231. The reversal of 642232468176 is 671864232246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131290 + ... + 1140921.

It is an arithmetic number, because the mean of its divisors is an integer number (22361670324).

Almost surely, 2^642232468176 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 642232468176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (894466812960).

642232468176 is an abundant number, since it is smaller than the sum of its proper divisors (1146701157744).

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

642232468176 is a wasteful number, since it uses less digits than its factorization.

642232468176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273044 (or 1273038 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 51.

The spelling of 642232468176 in words is "six hundred forty-two billion, two hundred thirty-two million, four hundred sixty-eight thousand, one hundred seventy-six".