642342260264 has 16 divisors (see below), whose sum is σ = 1227116111220. Its totient is φ = 315111297280.

The previous prime is 642342260233. The next prime is 642342260281. The reversal of 642342260264 is 462062243246.

It can be written as a sum of positive squares in 2 ways, for example, as 642001562500 + 340697764 = 801250^2 + 18458^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757478657 + ... + 757479504.

Almost surely, 2^642342260264 is an apocalyptic number.

It is an amenable number.

642342260264 is a deficient number, since it is larger than the sum of its proper divisors (584773850956).

642342260264 is a wasteful number, since it uses less digits than its factorization.

642342260264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514958220 (or 1514958216 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 41.

The spelling of 642342260264 in words is "six hundred forty-two billion, three hundred forty-two million, two hundred sixty thousand, two hundred sixty-four".