12993607440 has 160 divisors (see below), whose sum is σ = 48824553600. Its totient is φ = 3149959680.

The previous prime is 12993607369. The next prime is 12993607447. The reversal of 12993607440 is 4470639921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (12993607447) 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, 249675 + ... + 297194.

It is an arithmetic number, because the mean of its divisors is an integer number (305153460).

Almost surely, 2^12993607440 is an apocalyptic number.

12993607440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12993607440 is an abundant number, since it is smaller than the sum of its proper divisors (35830946160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12993607440 is a wasteful number, since it uses less digits than its factorization.

12993607440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546902 (or 546890 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 12993607440 in words is "twelve billion, nine hundred ninety-three million, six hundred seven thousand, four hundred forty".