12913622645 has 32 divisors (see below), whose sum is σ = 19552942080. Its totient is φ = 7953042240.

The previous prime is 12913622641. The next prime is 12913622651. The reversal of 12913622645 is 54622631921.

12913622645 = 65608² + 65609² + 65610².

It is not a de Polignac number, because 12913622645 - 2² = 12913622641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12913622641) 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, 170105 + ... + 234014.

It is an arithmetic number, because the mean of its divisors is an integer number (611029440).

Almost surely, 2^12913622645 is an apocalyptic number.

It is an amenable number.

12913622645 is a deficient number, since it is larger than the sum of its proper divisors (6639319435).

12913622645 is a wasteful number, since it uses less digits than its factorization.

12913622645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404225.

The product of its digits is 155520, while the sum is 41.

The spelling of 12913622645 in words is "twelve billion, nine hundred thirteen million, six hundred twenty-two thousand, six hundred forty-five".