642463452044 has 6 divisors (see below), whose sum is σ = 1124311041084. Its totient is φ = 321231726020.

The previous prime is 642463452019. The next prime is 642463452149. The reversal of 642463452044 is 440254364246.

642463452044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 642463451986 and 642463452004.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80307931502 + ... + 80307931509.

It is an arithmetic number, because the mean of its divisors is an integer number (187385173514).

Almost surely, 2^642463452044 is an apocalyptic number.

It is an amenable number.

642463452044 is a deficient number, since it is larger than the sum of its proper divisors (481847589040).

642463452044 is a wasteful number, since it uses less digits than its factorization.

642463452044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160615863015 (or 160615863013 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 44.

The spelling of 642463452044 in words is "six hundred forty-two billion, four hundred sixty-three million, four hundred fifty-two thousand, forty-four".