12987777294 has 48 divisors (see below), whose sum is σ = 29776481280. Its totient is φ = 4079909520.

The previous prime is 12987777277. The next prime is 12987777331. The reversal of 12987777294 is 49277778921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34092 + ... + 164735.

It is an arithmetic number, because the mean of its divisors is an integer number (620343360).

Almost surely, 2^12987777294 is an apocalyptic number.

12987777294 is an abundant number, since it is smaller than the sum of its proper divisors (16788703986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12987777294 is a wasteful number, since it uses less digits than its factorization.

12987777294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199045 (or 199042 counting only the distinct ones).

The product of its digits is 24893568, while the sum is 63.

The spelling of 12987777294 in words is "twelve billion, nine hundred eighty-seven million, seven hundred seventy-seven thousand, two hundred ninety-four".