12776898499 has 4 divisors (see below), whose sum is σ = 12782896360. Its totient is φ = 12770900640.

The previous prime is 12776898457. The next prime is 12776898509. The reversal of 12776898499 is 99489867721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99489867721 = 45853 ⋅2169757.

It is a cyclic number.

It is not a de Polignac number, because 12776898499 - 2¹³ = 12776890307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12776898599) 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, 2995734 + ... + 2999995.

It is an arithmetic number, because the mean of its divisors is an integer number (3195724090).

Almost surely, 2^12776898499 is an apocalyptic number.

12776898499 is a deficient number, since it is larger than the sum of its proper divisors (5997861).

12776898499 is an equidigital number, since it uses as much as digits as its factorization.

12776898499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5997860.

The product of its digits is 109734912, while the sum is 70.

The spelling of 12776898499 in words is "twelve billion, seven hundred seventy-six million, eight hundred ninety-eight thousand, four hundred ninety-nine".