642008863616 has 32 divisors (see below), whose sum is σ = 1281218821680. Its totient is φ = 320448061440.

The previous prime is 642008863603. The next prime is 642008863687. The reversal of 642008863616 is 616368800246.

It is a happy number.

642008863616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

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, 4272500 + ... + 4420211.

Almost surely, 2^642008863616 is an apocalyptic number.

It is an amenable number.

642008863616 is a deficient number, since it is larger than the sum of its proper divisors (639209958064).

642008863616 is an equidigital number, since it uses as much as digits as its factorization.

642008863616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8693302 (or 8693290 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 50.

The spelling of 642008863616 in words is "six hundred forty-two billion, eight million, eight hundred sixty-three thousand, six hundred sixteen".