642324441624 has 16 divisors (see below), whose sum is σ = 1605811104120. Its totient is φ = 214108147200.

The previous prime is 642324441623. The next prime is 642324441667. The reversal of 642324441624 is 426144423246.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642324441623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13381759177 + ... + 13381759224.

Almost surely, 2^642324441624 is an apocalyptic number.

It is an amenable number.

642324441624 is an abundant number, since it is smaller than the sum of its proper divisors (963486662496).

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

642324441624 is a wasteful number, since it uses less digits than its factorization.

642324441624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26763518410 (or 26763518406 counting only the distinct ones).

The product of its digits is 884736, while the sum is 42.

The spelling of 642324441624 in words is "six hundred forty-two billion, three hundred twenty-four million, four hundred forty-one thousand, six hundred twenty-four".