642501676672 has 32 divisors (see below), whose sum is σ = 1281926289600. Its totient is φ = 320763313920.

The previous prime is 642501676657. The next prime is 642501676703. The reversal of 642501676672 is 276676105246.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3724104 + ... + 3892807.

It is an arithmetic number, because the mean of its divisors is an integer number (40060196550).

Almost surely, 2^642501676672 is an apocalyptic number.

It is an amenable number.

642501676672 is a deficient number, since it is larger than the sum of its proper divisors (639424612928).

642501676672 is an equidigital number, since it uses as much as digits as its factorization.

642501676672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7617584 (or 7617572 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 52.

The spelling of 642501676672 in words is "six hundred forty-two billion, five hundred one million, six hundred seventy-six thousand, six hundred seventy-two".