12451275451 has 4 divisors (see below), whose sum is σ = 12458958304. Its totient is φ = 12443592600.

The previous prime is 12451275449. The next prime is 12451275497. The reversal of 12451275451 is 15457215421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12451275451 - 2¹ = 12451275449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12451275451.

It is not an unprimeable number, because it can be changed into a prime (12451275401) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3838995 + ... + 3842236.

It is an arithmetic number, because the mean of its divisors is an integer number (3114739576).

Almost surely, 2^12451275451 is an apocalyptic number.

12451275451 is a deficient number, since it is larger than the sum of its proper divisors (7682853).

12451275451 is an equidigital number, since it uses as much as digits as its factorization.

12451275451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7682852.

The product of its digits is 56000, while the sum is 37.

The spelling of 12451275451 in words is "twelve billion, four hundred fifty-one million, two hundred seventy-five thousand, four hundred fifty-one".