645413314496 has 84 divisors (see below), whose sum is σ = 1361519273400. Its totient is φ = 303498940416.

The previous prime is 645413314487. The next prime is 645413314517. The reversal of 645413314496 is 694413314546.

It is a happy number.

It is a congruent number.

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, 26418575 + ... + 26442993.

Almost surely, 2^645413314496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 645413314496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (680759636700).

645413314496 is an abundant number, since it is smaller than the sum of its proper divisors (716105958904).

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

645413314496 is a wasteful number, since it uses less digits than its factorization.

645413314496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25894 (or 25867 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 50.

Adding to 645413314496 its sum of digits (50), we get a palindrome (645413314546).

The spelling of 645413314496 in words is "six hundred forty-five billion, four hundred thirteen million, three hundred fourteen thousand, four hundred ninety-six".