12887662518 has 16 divisors (see below), whose sum is σ = 28639250160. Its totient is φ = 4295887488.

The previous prime is 12887662499. The next prime is 12887662531. The reversal of 12887662518 is 81526678821.

12887662518 is a `hidden beast` number, since 1 + 2 + 8 + 8 + 7 + 6 + 625 + 1 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 238660417 = 12887662518 / (1 + 2 + 8 + 8 + 7 + 6 + 6 + 2 + 5 + 1 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119330155 + ... + 119330262.

It is an arithmetic number, because the mean of its divisors is an integer number (1789953135).

Almost surely, 2^12887662518 is an apocalyptic number.

12887662518 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12887662518 is an abundant number, since it is smaller than the sum of its proper divisors (15751587642).

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

12887662518 is a wasteful number, since it uses less digits than its factorization.

12887662518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238660428 (or 238660422 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 54.

The spelling of 12887662518 in words is "twelve billion, eight hundred eighty-seven million, six hundred sixty-two thousand, five hundred eighteen".