12548850279491 has 4 divisors (see below), whose sum is σ = 12595500280800. Its totient is φ = 12502200278184.

The previous prime is 12548850279481. The next prime is 12548850279499. The reversal of 12548850279491 is 19497205884521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12548850279491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12548850279499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23325000251 + ... + 23325000788.

It is an arithmetic number, because the mean of its divisors is an integer number (3148875070200).

Almost surely, 2^{12548850279491} is an apocalyptic number.

12548850279491 is a deficient number, since it is larger than the sum of its proper divisors (46650001309).

12548850279491 is an equidigital number, since it uses as much as digits as its factorization.

12548850279491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46650001308.

The product of its (nonzero) digits is 58060800, while the sum is 65.

The spelling of 12548850279491 in words is "twelve trillion, five hundred forty-eight billion, eight hundred fifty million, two hundred seventy-nine thousand, four hundred ninety-one".