12777579419 has 4 divisors (see below), whose sum is σ = 13939177560. Its totient is φ = 11615981280.

The previous prime is 12777579379. The next prime is 12777579421. The reversal of 12777579419 is 91497577721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91497577721 = 11 ⋅8317961611.

It is a cyclic number.

It is not a de Polignac number, because 12777579419 - 2²⁴ = 12760802203 is a prime.

It is a super-2 number, since 2×12777579419² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12777579119) 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, 580799054 + ... + 580799075.

It is an arithmetic number, because the mean of its divisors is an integer number (3484794390).

Almost surely, 2^12777579419 is an apocalyptic number.

12777579419 is a deficient number, since it is larger than the sum of its proper divisors (1161598141).

12777579419 is a wasteful number, since it uses less digits than its factorization.

12777579419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161598140.

The product of its digits is 7779240, while the sum is 59.

The spelling of 12777579419 in words is "twelve billion, seven hundred seventy-seven million, five hundred seventy-nine thousand, four hundred nineteen".