12581992551 has 16 divisors (see below), whose sum is σ = 16875986400. Its totient is φ = 8338037760.

The previous prime is 12581992541. The next prime is 12581992583. The reversal of 12581992551 is 15529918521.

It is not a de Polignac number, because 12581992551 - 2¹⁵ = 12581959783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12581992551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12581992541) 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, 1947775 + ... + 1954223.

It is an arithmetic number, because the mean of its divisors is an integer number (1054749150).

Almost surely, 2^12581992551 is an apocalyptic number.

12581992551 is a deficient number, since it is larger than the sum of its proper divisors (4293993849).

12581992551 is a wasteful number, since it uses less digits than its factorization.

12581992551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10226.

The product of its digits is 324000, while the sum is 48.

The spelling of 12581992551 in words is "twelve billion, five hundred eighty-one million, nine hundred ninety-two thousand, five hundred fifty-one".