642914868048 has 20 divisors (see below), whose sum is σ = 1660863409248. Its totient is φ = 214304956000.

The previous prime is 642914868047. The next prime is 642914868059. The reversal of 642914868048 is 840868419246.

It is a junction number, because it is equal to n+sod(n) for n = 642914867982 and 642914868000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642914868047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6697029828 + ... + 6697029923.

Almost surely, 2^642914868048 is an apocalyptic number.

It is an amenable number.

642914868048 is an abundant number, since it is smaller than the sum of its proper divisors (1017948541200).

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

642914868048 is a wasteful number, since it uses less digits than its factorization.

642914868048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13394059762 (or 13394059756 counting only the distinct ones).

The product of its (nonzero) digits is 21233664, while the sum is 60.

The spelling of 642914868048 in words is "six hundred forty-two billion, nine hundred fourteen million, eight hundred sixty-eight thousand, forty-eight".