12609344145 has 32 divisors (see below), whose sum is σ = 20731635072. Its totient is φ = 6539622912.

The previous prime is 12609344117. The next prime is 12609344207. The reversal of 12609344145 is 54144390621.

It is not a de Polignac number, because 12609344145 - 2⁵ = 12609344113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1217509 + ... + 1227821.

It is an arithmetic number, because the mean of its divisors is an integer number (647863596).

Almost surely, 2^12609344145 is an apocalyptic number.

12609344145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12609344145 is a deficient number, since it is larger than the sum of its proper divisors (8122290927).

12609344145 is a wasteful number, since it uses less digits than its factorization.

12609344145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12561.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 12609344145 in words is "twelve billion, six hundred nine million, three hundred forty-four thousand, one hundred forty-five".