640301412432 has 80 divisors (see below), whose sum is σ = 1862695065600. Its totient is φ = 187771670400.

The previous prime is 640301412397. The next prime is 640301412449. The reversal of 640301412432 is 234214103046.

It is a self number, because there is not a number n which added to its sum of digits gives 640301412432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19543182 + ... + 19575917.

It is an arithmetic number, because the mean of its divisors is an integer number (23283688320).

Almost surely, 2^640301412432 is an apocalyptic number.

640301412432 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

640301412432 is an abundant number, since it is smaller than the sum of its proper divisors (1222393653168).

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

640301412432 is a wasteful number, since it uses less digits than its factorization.

640301412432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39119152 (or 39119146 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 640301412432 its reverse (234214103046), we get a palindrome (874515515478).

The spelling of 640301412432 in words is "six hundred forty billion, three hundred one million, four hundred twelve thousand, four hundred thirty-two".