645325358415 has 16 divisors (see below), whose sum is σ = 1032841608288. Its totient is φ = 344066512896.

The previous prime is 645325358399. The next prime is 645325358423. The reversal of 645325358415 is 514853523546.

It is not a de Polignac number, because 645325358415 - 2⁴ = 645325358399 is a prime.

It is a super-2 number, since 2×645325358415² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6638362 + ... + 6734871.

It is an arithmetic number, because the mean of its divisors is an integer number (64552600518).

Almost surely, 2^645325358415 is an apocalyptic number.

645325358415 is a deficient number, since it is larger than the sum of its proper divisors (387516249873).

645325358415 is a wasteful number, since it uses less digits than its factorization.

645325358415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13376458.

The product of its digits is 8640000, while the sum is 51.

The spelling of 645325358415 in words is "six hundred forty-five billion, three hundred twenty-five million, three hundred fifty-eight thousand, four hundred fifteen".