645314509119 has 32 divisors (see below), whose sum is σ = 1058248267776. Its totient is φ = 341370385920.

The previous prime is 645314509109. The next prime is 645314509211. The reversal of 645314509119 is 911905413546.

It is not a de Polignac number, because 645314509119 - 2²⁸ = 645046073663 is a prime.

It is a super-2 number, since 2×645314509119² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645314509109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14794647 + ... + 14838200.

It is an arithmetic number, because the mean of its divisors is an integer number (33070258368).

Almost surely, 2^645314509119 is an apocalyptic number.

645314509119 is a deficient number, since it is larger than the sum of its proper divisors (412933758657).

645314509119 is a wasteful number, since it uses less digits than its factorization.

645314509119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29632935.

The product of its (nonzero) digits is 583200, while the sum is 48.

The spelling of 645314509119 in words is "six hundred forty-five billion, three hundred fourteen million, five hundred nine thousand, one hundred nineteen".