12451205736 has 32 divisors (see below), whose sum is σ = 34586683200. Its totient is φ = 4150401840.

The previous prime is 12451205731. The next prime is 12451205743. The reversal of 12451205736 is 63750215421.

12451205736 is a `hidden beast` number, since 12 + 4 + 51 + 20 + 573 + 6 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12451205736.

It is not an unprimeable number, because it can be changed into a prime (12451205731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28822020 + ... + 28822451.

It is an arithmetic number, because the mean of its divisors is an integer number (1080833850).

Almost surely, 2^12451205736 is an apocalyptic number.

It is an amenable number.

12451205736 is an abundant number, since it is smaller than the sum of its proper divisors (22135477464).

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

12451205736 is a wasteful number, since it uses less digits than its factorization.

12451205736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57644486 (or 57644476 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 12451205736 in words is "twelve billion, four hundred fifty-one million, two hundred five thousand, seven hundred thirty-six".