642064333504 has 56 divisors (see below), whose sum is σ = 1390688575488. Its totient is φ = 291686749440.

The previous prime is 642064333447. The next prime is 642064333531. The reversal of 642064333504 is 405333460246.

It is a happy number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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 7 ways as a sum of consecutive naturals, for example, 1033249 + ... + 1533535.

Almost surely, 2^642064333504 is an apocalyptic number.

642064333504 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

642064333504 is an abundant number, since it is smaller than the sum of its proper divisors (748624241984).

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

642064333504 is a wasteful number, since it uses less digits than its factorization.

642064333504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502133 (or 502123 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 40.

The spelling of 642064333504 in words is "six hundred forty-two billion, sixty-four million, three hundred thirty-three thousand, five hundred four".