12776263889 has 8 divisors (see below), whose sum is σ = 13068432168. Its totient is φ = 12486764160.

The previous prime is 12776263883. The next prime is 12776263897. The reversal of 12776263889 is 98836267721.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 250177489 + 12526086400 = 15817^2 + 111920^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12776263889 - 2¹⁶ = 12776198353 is a prime.

It is a super-2 number, since 2×12776263889² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12776263883) 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, 657452 + ... + 676605.

It is an arithmetic number, because the mean of its divisors is an integer number (1633554021).

Almost surely, 2^12776263889 is an apocalyptic number.

It is an amenable number.

12776263889 is a deficient number, since it is larger than the sum of its proper divisors (292168279).

12776263889 is a wasteful number, since it uses less digits than its factorization.

12776263889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334275.

The product of its digits is 12192768, while the sum is 59.

The spelling of 12776263889 in words is "twelve billion, seven hundred seventy-six million, two hundred sixty-three thousand, eight hundred eighty-nine".