12813240492 has 36 divisors (see below), whose sum is σ = 34880489280. Its totient is φ = 3942535392.

The previous prime is 12813240481. The next prime is 12813240523. The reversal of 12813240492 is 29404231821.

12813240492 is a `hidden beast` number, since 128 + 1 + 3 + 2 + 40 + 492 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13688892 + ... + 13689827.

It is an arithmetic number, because the mean of its divisors is an integer number (968902480).

Almost surely, 2^12813240492 is an apocalyptic number.

12813240492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12813240492 is an abundant number, since it is smaller than the sum of its proper divisors (22067248788).

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

12813240492 is a wasteful number, since it uses less digits than its factorization.

12813240492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27378742 (or 27378737 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 12813240492 in words is "twelve billion, eight hundred thirteen million, two hundred forty thousand, four hundred ninety-two".