12774396447 has 12 divisors (see below), whose sum is σ = 18534652864. Its totient is φ = 8478073440.

The previous prime is 12774396431. The next prime is 12774396449. The reversal of 12774396447 is 74469347721.

It is a happy number.

12774396447 is a `hidden beast` number, since 1 + 2 + 77 + 43 + 96 + 447 = 666.

It is not a de Polignac number, because 12774396447 - 2⁴ = 12774396431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12774396393 and 12774396402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12774396449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3180454 + ... + 3184467.

Almost surely, 2^12774396447 is an apocalyptic number.

12774396447 is a deficient number, since it is larger than the sum of its proper divisors (5760256417).

12774396447 is a wasteful number, since it uses less digits than its factorization.

12774396447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6365150 (or 6365147 counting only the distinct ones).

The product of its digits is 7112448, while the sum is 54.

The spelling of 12774396447 in words is "twelve billion, seven hundred seventy-four million, three hundred ninety-six thousand, four hundred forty-seven".