12776758454 has 4 divisors (see below), whose sum is σ = 19165137684. Its totient is φ = 6388379226.

The previous prime is 12776758349. The next prime is 12776758499. The reversal of 12776758454 is 45485767721.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12776758454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3194189612 + ... + 3194189615.

It is an arithmetic number, because the mean of its divisors is an integer number (4791284421).

Almost surely, 2^12776758454 is an apocalyptic number.

12776758454 is a deficient number, since it is larger than the sum of its proper divisors (6388379230).

12776758454 is an equidigital number, since it uses as much as digits as its factorization.

12776758454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6388379229.

The product of its digits is 13171200, while the sum is 56.

The spelling of 12776758454 in words is "twelve billion, seven hundred seventy-six million, seven hundred fifty-eight thousand, four hundred fifty-four".