12257792447 has 4 divisors (see below), whose sum is σ = 12272945040. Its totient is φ = 12242639856.

The previous prime is 12257792441. The next prime is 12257792467. The reversal of 12257792447 is 74429775221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74429775221 = 31 ⋅2400960491.

It is a cyclic number.

It is not a de Polignac number, because 12257792447 - 2⁸ = 12257792191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12257792395 and 12257792404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12257792441) 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, 7575083 + ... + 7576700.

It is an arithmetic number, because the mean of its divisors is an integer number (3068236260).

Almost surely, 2^12257792447 is an apocalyptic number.

12257792447 is a deficient number, since it is larger than the sum of its proper divisors (15152593).

12257792447 is an equidigital number, since it uses as much as digits as its factorization.

12257792447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15152592.

The product of its digits is 1975680, while the sum is 50.

The spelling of 12257792447 in words is "twelve billion, two hundred fifty-seven million, seven hundred ninety-two thousand, four hundred forty-seven".