642204453364 has 24 divisors (see below), whose sum is σ = 1129990675968. Its totient is φ = 319354000800.

The previous prime is 642204453349. The next prime is 642204453409. The reversal of 642204453364 is 463354402246.

642204453364 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 642204453364.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135714 + ... + 1141414.

It is an arithmetic number, because the mean of its divisors is an integer number (47082944832).

Almost surely, 2^642204453364 is an apocalyptic number.

It is an amenable number.

642204453364 is a deficient number, since it is larger than the sum of its proper divisors (487786222604).

642204453364 is a wasteful number, since it uses less digits than its factorization.

642204453364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006575 (or 1006573 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 43.

The spelling of 642204453364 in words is "six hundred forty-two billion, two hundred four million, four hundred fifty-three thousand, three hundred sixty-four".