640253404400200 has 48 divisors (see below), whose sum is σ = 1488609750735360. Its totient is φ = 256097820168000.

The previous prime is 640253404400179. The next prime is 640253404400299. The reversal of 640253404400200 is 2004404352046.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7612536 + ... + 36584935.

It is an arithmetic number, because the mean of its divisors is an integer number (31012703140320).

Almost surely, 2^{640253404400200} is an apocalyptic number.

It is an amenable number.

640253404400200 is an abundant number, since it is smaller than the sum of its proper divisors (848356346335160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

640253404400200 is a wasteful number, since it uses less digits than its factorization.

640253404400200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44269918 (or 44269909 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 34.

Adding to 640253404400200 its reverse (2004404352046), we get a palindrome (642257808752246).

The spelling of 640253404400200 in words is "six hundred forty trillion, two hundred fifty-three billion, four hundred four million, four hundred thousand, two hundred".