642220044584 has 16 divisors (see below), whose sum is σ = 1209467268000. Its totient is φ = 319695439792.

The previous prime is 642220044581. The next prime is 642220044647. The reversal of 642220044584 is 485440022246.

It is not an unprimeable number, because it can be changed into a prime (642220044581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176820884 + ... + 176824515.

It is an arithmetic number, because the mean of its divisors is an integer number (75591704250).

Almost surely, 2^642220044584 is an apocalyptic number.

It is an amenable number.

642220044584 is a deficient number, since it is larger than the sum of its proper divisors (567247223416).

642220044584 is a wasteful number, since it uses less digits than its factorization.

642220044584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353645632 (or 353645628 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 41.

The spelling of 642220044584 in words is "six hundred forty-two billion, two hundred twenty million, forty-four thousand, five hundred eighty-four".