12987117335 has 4 divisors (see below), whose sum is σ = 15584540808. Its totient is φ = 10389693864.

The previous prime is 12987117331. The next prime is 12987117337. The reversal of 12987117335 is 53371178921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12987117335 - 2² = 12987117331 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12987117335.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12987117331) 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, 1298711729 + ... + 1298711738.

It is an arithmetic number, because the mean of its divisors is an integer number (3896135202).

Almost surely, 2^12987117335 is an apocalyptic number.

12987117335 is a deficient number, since it is larger than the sum of its proper divisors (2597423473).

12987117335 is an equidigital number, since it uses as much as digits as its factorization.

12987117335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2597423472.

The product of its digits is 317520, while the sum is 47.

The spelling of 12987117335 in words is "twelve billion, nine hundred eighty-seven million, one hundred seventeen thousand, three hundred thirty-five".