642031038634496 has 160 divisors (see below), whose sum is σ = 1524241683360000. Its totient is φ = 264332992315392.

The previous prime is 642031038634493. The next prime is 642031038634519. The reversal of 642031038634496 is 694436830130246.

It is not an unprimeable number, because it can be changed into a prime (642031038634493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5162720 + ... + 36203808.

It is an arithmetic number, because the mean of its divisors is an integer number (9526510521000).

Almost surely, 2^{642031038634496} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 642031038634496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (762120841680000).

642031038634496 is an abundant number, since it is smaller than the sum of its proper divisors (882210644725504).

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

642031038634496 is a wasteful number, since it uses less digits than its factorization.

642031038634496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31041342 (or 31041326 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 59.

The spelling of 642031038634496 in words is "six hundred forty-two trillion, thirty-one billion, thirty-eight million, six hundred thirty-four thousand, four hundred ninety-six".