12863220447 has 36 divisors (see below), whose sum is σ = 21929770968. Its totient is φ = 6682183200.

The previous prime is 12863220439. The next prime is 12863220481. The reversal of 12863220447 is 74402236821.

It is a happy number.

It is not a de Polignac number, because 12863220447 - 2³ = 12863220439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12863220407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 343804 + ... + 379377.

Almost surely, 2^12863220447 is an apocalyptic number.

12863220447 is a deficient number, since it is larger than the sum of its proper divisors (9066550521).

12863220447 is a wasteful number, since it uses less digits than its factorization.

12863220447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723220 (or 723202 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The spelling of 12863220447 in words is "twelve billion, eight hundred sixty-three million, two hundred twenty thousand, four hundred forty-seven".