12451987494 has 16 divisors (see below), whose sum is σ = 27671083440. Its totient is φ = 4150662480.

The previous prime is 12451987487. The next prime is 12451987547. The reversal of 12451987494 is 49478915421.

12451987494 is a `hidden beast` number, since 1 + 2 + 4 + 519 + 87 + 49 + 4 = 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: 230592361 = 12451987494 / (1 + 2 + 4 + 5 + 1 + 9 + 8 + 7 + 4 + 9 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 12451987494.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115296127 + ... + 115296234.

It is an arithmetic number, because the mean of its divisors is an integer number (1729442715).

Almost surely, 2^12451987494 is an apocalyptic number.

12451987494 is an abundant number, since it is smaller than the sum of its proper divisors (15219095946).

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

12451987494 is a wasteful number, since it uses less digits than its factorization.

12451987494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230592372 (or 230592366 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The spelling of 12451987494 in words is "twelve billion, four hundred fifty-one million, nine hundred eighty-seven thousand, four hundred ninety-four".