642914868848 has 20 divisors (see below), whose sum is σ = 1423597209840. Its totient is φ = 275534943744.

The previous prime is 642914868839. The next prime is 642914868853. The reversal of 642914868848 is 848868419246.

642914868848 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2870155553 + ... + 2870155776.

It is an arithmetic number, because the mean of its divisors is an integer number (71179860492).

Almost surely, 2^642914868848 is an apocalyptic number.

It is an amenable number.

642914868848 is an abundant number, since it is smaller than the sum of its proper divisors (780682340992).

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

642914868848 is a wasteful number, since it uses less digits than its factorization.

642914868848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5740311344 (or 5740311338 counting only the distinct ones).

The product of its digits is 169869312, while the sum is 68.

The spelling of 642914868848 in words is "six hundred forty-two billion, nine hundred fourteen million, eight hundred sixty-eight thousand, eight hundred forty-eight".