12993274945 has 32 divisors (see below), whose sum is σ = 18270604800. Its totient is φ = 8684444160.

The previous prime is 12993274939. The next prime is 12993274949. The reversal of 12993274945 is 54947239921.

It is a happy number.

It is not a de Polignac number, because 12993274945 - 2⁷ = 12993274817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12993274949) 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, 1866331 + ... + 1873279.

It is an arithmetic number, because the mean of its divisors is an integer number (570956400).

Almost surely, 2^12993274945 is an apocalyptic number.

It is an amenable number.

12993274945 is a deficient number, since it is larger than the sum of its proper divisors (5277329855).

12993274945 is a wasteful number, since it uses less digits than its factorization.

12993274945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8305.

The product of its digits is 4898880, while the sum is 55.

The spelling of 12993274945 in words is "twelve billion, nine hundred ninety-three million, two hundred seventy-four thousand, nine hundred forty-five".