645245563115 has 8 divisors (see below), whose sum is σ = 779491285200. Its totient is φ = 512732044192.

The previous prime is 645245563099. The next prime is 645245563163. The reversal of 645245563115 is 511365542546.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 645245563115 - 2⁴ = 645245563099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 645245563115.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433049969 + ... + 433051458.

It is an arithmetic number, because the mean of its divisors is an integer number (97436410650).

Almost surely, 2^645245563115 is an apocalyptic number.

645245563115 is a deficient number, since it is larger than the sum of its proper divisors (134245722085).

645245563115 is a wasteful number, since it uses less digits than its factorization.

645245563115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866101581.

The product of its digits is 2160000, while the sum is 47.

The spelling of 645245563115 in words is "six hundred forty-five billion, two hundred forty-five million, five hundred sixty-three thousand, one hundred fifteen".