12831787761 has 16 divisors (see below), whose sum is σ = 18430862016. Its totient is φ = 7894028736.

The previous prime is 12831787733. The next prime is 12831787763. The reversal of 12831787761 is 16778713821.

It is not a de Polignac number, because 12831787761 - 2⁹ = 12831787249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12831787763) 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, 80091 + ... + 179103.

It is an arithmetic number, because the mean of its divisors is an integer number (1151928876).

Almost surely, 2^12831787761 is an apocalyptic number.

It is an amenable number.

12831787761 is a deficient number, since it is larger than the sum of its proper divisors (5599074255).

12831787761 is a wasteful number, since it uses less digits than its factorization.

12831787761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102352.

The product of its digits is 790272, while the sum is 51.

The spelling of 12831787761 in words is "twelve billion, eight hundred thirty-one million, seven hundred eighty-seven thousand, seven hundred sixty-one".