12777108447 has 8 divisors (see below), whose sum is σ = 17037420544. Its totient is φ = 8517434328.

The previous prime is 12777108427. The next prime is 12777108473. The reversal of 12777108447 is 74480177721.

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

It is not a de Polignac number, because 12777108447 - 2¹⁴ = 12777092063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12777108396 and 12777108405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12777108427) 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, 110623 + ... + 194400.

It is an arithmetic number, because the mean of its divisors is an integer number (2129677568).

Almost surely, 2^12777108447 is an apocalyptic number.

12777108447 is a deficient number, since it is larger than the sum of its proper divisors (4260312097).

12777108447 is a wasteful number, since it uses less digits than its factorization.

12777108447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318989.

The product of its (nonzero) digits is 614656, while the sum is 48.

The spelling of 12777108447 in words is "twelve billion, seven hundred seventy-seven million, one hundred eight thousand, four hundred forty-seven".