642074318832 has 40 divisors (see below), whose sum is σ = 1658844977920. Its totient is φ = 214005032640.

The previous prime is 642074318797. The next prime is 642074318833. The reversal of 642074318832 is 238813470246.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642074318833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86344 + ... + 1136487.

It is an arithmetic number, because the mean of its divisors is an integer number (41471124448).

Almost surely, 2^642074318832 is an apocalyptic number.

It is an amenable number.

642074318832 is an abundant number, since it is smaller than the sum of its proper divisors (1016770659088).

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

642074318832 is a wasteful number, since it uses less digits than its factorization.

642074318832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233781 (or 1233775 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 48.

The spelling of 642074318832 in words is "six hundred forty-two billion, seventy-four million, three hundred eighteen thousand, eight hundred thirty-two".