645314630513 has 12 divisors (see below), whose sum is σ = 752164539840. Its totient is φ = 552027149352.

The previous prime is 645314630503. The next prime is 645314630539. The reversal of 645314630513 is 315036413546.

It is not a de Polignac number, because 645314630513 - 2⁴ = 645314630497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (645314630503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13066493 + ... + 13115786.

It is an arithmetic number, because the mean of its divisors is an integer number (62680378320).

Almost surely, 2^645314630513 is an apocalyptic number.

It is an amenable number.

645314630513 is a deficient number, since it is larger than the sum of its proper divisors (106849909327).

645314630513 is a wasteful number, since it uses less digits than its factorization.

645314630513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26182796 (or 26182789 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 645314630513 in words is "six hundred forty-five billion, three hundred fourteen million, six hundred thirty thousand, five hundred thirteen".