642316430634 has 16 divisors (see below), whose sum is σ = 1284658102560. Its totient is φ = 214101270000.

The previous prime is 642316430627. The next prime is 642316430663. The reversal of 642316430634 is 436034613246.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 712492 + ... + 1338759.

It is an arithmetic number, because the mean of its divisors is an integer number (80291131410).

Almost surely, 2^642316430634 is an apocalyptic number.

642316430634 is an abundant number, since it is smaller than the sum of its proper divisors (642341671926).

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

642316430634 is a wasteful number, since it uses less digits than its factorization.

642316430634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103445.

The product of its (nonzero) digits is 746496, while the sum is 42.

The spelling of 642316430634 in words is "six hundred forty-two billion, three hundred sixteen million, four hundred thirty thousand, six hundred thirty-four".