12561248797 has 8 divisors (see below), whose sum is σ = 12595302720. Its totient is φ = 12527220480.

The previous prime is 12561248759. The next prime is 12561248831. The reversal of 12561248797 is 79784216521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12561248797 - 2²³ = 12552860189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12561248737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1348797 + ... + 1358077.

It is an arithmetic number, because the mean of its divisors is an integer number (1574412840).

Almost surely, 2^12561248797 is an apocalyptic number.

It is an amenable number.

12561248797 is a deficient number, since it is larger than the sum of its proper divisors (34053923).

12561248797 is an equidigital number, since it uses as much as digits as its factorization.

12561248797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12803.

The product of its digits is 1693440, while the sum is 52.

The spelling of 12561248797 in words is "twelve billion, five hundred sixty-one million, two hundred forty-eight thousand, seven hundred ninety-seven".