12278260705 has 4 divisors (see below), whose sum is σ = 14733912852. Its totient is φ = 9822608560.

The previous prime is 12278260703. The next prime is 12278260723. The reversal of 12278260705 is 50706287221.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9168637009 + 3109623696 = 95753^2 + 55764^2 .

It is not a de Polignac number, because 12278260705 - 2¹ = 12278260703 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12278260703) 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, 1227826066 + ... + 1227826075.

It is an arithmetic number, because the mean of its divisors is an integer number (3683478213).

Almost surely, 2^12278260705 is an apocalyptic number.

It is an amenable number.

12278260705 is a deficient number, since it is larger than the sum of its proper divisors (2455652147).

12278260705 is an equidigital number, since it uses as much as digits as its factorization.

12278260705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455652146.

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 12278260705 in words is "twelve billion, two hundred seventy-eight million, two hundred sixty thousand, seven hundred five".