642632312793 has 8 divisors (see below), whose sum is σ = 857087980000. Its totient is φ = 428299093728.

The previous prime is 642632312779. The next prime is 642632312821. The reversal of 642632312793 is 397213236246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 642632312793 - 2⁸ = 642632312537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642632312713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30599788 + ... + 30620781.

It is an arithmetic number, because the mean of its divisors is an integer number (107135997500).

Almost surely, 2^642632312793 is an apocalyptic number.

It is an amenable number.

642632312793 is a deficient number, since it is larger than the sum of its proper divisors (214455667207).

642632312793 is a wasteful number, since it uses less digits than its factorization.

642632312793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61224071.

The product of its digits is 1959552, while the sum is 48.

The spelling of 642632312793 in words is "six hundred forty-two billion, six hundred thirty-two million, three hundred twelve thousand, seven hundred ninety-three".