640413411220 has 72 divisors (see below), whose sum is σ = 1509695776512. Its totient is φ = 227922720960.

The previous prime is 640413411217. The next prime is 640413411251. The reversal of 640413411220 is 22114314046.

640413411220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 2701512 + ... + 2928991.

It is an arithmetic number, because the mean of its divisors is an integer number (20967996896).

Almost surely, 2^640413411220 is an apocalyptic number.

It is an amenable number.

640413411220 is an abundant number, since it is smaller than the sum of its proper divisors (869282365292).

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

640413411220 is a wasteful number, since it uses less digits than its factorization.

640413411220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5630581 (or 5630568 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 640413411220 its reverse (22114314046), we get a palindrome (662527725266).

The spelling of 640413411220 in words is "six hundred forty billion, four hundred thirteen million, four hundred eleven thousand, two hundred twenty".