12847765451 has 4 divisors (see below), whose sum is σ = 13023762312. Its totient is φ = 12671768592.

The previous prime is 12847765423. The next prime is 12847765459. The reversal of 12847765451 is 15456774821.

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 12847765451 - 2¹⁰ = 12847764427 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 12847765451.

It is not an unprimeable number, because it can be changed into a prime (12847765459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87998321 + ... + 87998466.

It is an arithmetic number, because the mean of its divisors is an integer number (3255940578).

Almost surely, 2^12847765451 is an apocalyptic number.

12847765451 is a deficient number, since it is larger than the sum of its proper divisors (175996861).

12847765451 is an equidigital number, since it uses as much as digits as its factorization.

12847765451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175996860.

The product of its digits is 1881600, while the sum is 50.

The spelling of 12847765451 in words is "twelve billion, eight hundred forty-seven million, seven hundred sixty-five thousand, four hundred fifty-one".