646342243594 has 48 divisors (see below), whose sum is σ = 1022733684000. Its totient is φ = 306314936928.

The previous prime is 646342243499. The next prime is 646342243633. The reversal of 646342243594 is 495342243646.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60181077 + ... + 60191815.

It is an arithmetic number, because the mean of its divisors is an integer number (21306951750).

Almost surely, 2^646342243594 is an apocalyptic number.

646342243594 is a deficient number, since it is larger than the sum of its proper divisors (376391440406).

646342243594 is a wasteful number, since it uses less digits than its factorization.

646342243594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11299 (or 11276 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 52.

Adding to 646342243594 its sum of digits (52), we get a palindrome (646342243646).

The spelling of 646342243594 in words is "six hundred forty-six billion, three hundred forty-two million, two hundred forty-three thousand, five hundred ninety-four".