12847257993 has 16 divisors (see below), whose sum is σ = 17598389760. Its totient is φ = 8330633856.

The previous prime is 12847257991. The next prime is 12847258019. The reversal of 12847257993 is 39975274821.

It is a happy number.

It is not a de Polignac number, because 12847257993 - 2¹ = 12847257991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12847257991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355621 + ... + 390077.

It is an arithmetic number, because the mean of its divisors is an integer number (1099899360).

Almost surely, 2^12847257993 is an apocalyptic number.

It is an amenable number.

12847257993 is a deficient number, since it is larger than the sum of its proper divisors (4751131767).

12847257993 is a wasteful number, since it uses less digits than its factorization.

12847257993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37856.

The product of its digits is 7620480, while the sum is 57.

The spelling of 12847257993 in words is "twelve billion, eight hundred forty-seven million, two hundred fifty-seven thousand, nine hundred ninety-three".