12777073408 has 108 divisors (see below), whose sum is σ = 28131244960. Its totient is φ = 5787555840.

The previous prime is 12777073343. The next prime is 12777073411. The reversal of 12777073408 is 80437077721.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12296953 + ... + 12297991.

Almost surely, 2^12777073408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12777073408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14065622480).

12777073408 is an abundant number, since it is smaller than the sum of its proper divisors (15354171552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12777073408 is a wasteful number, since it uses less digits than its factorization.

12777073408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474 (or 1449 counting only the distinct ones).

The product of its (nonzero) digits is 460992, while the sum is 46.

The spelling of 12777073408 in words is "twelve billion, seven hundred seventy-seven million, seventy-three thousand, four hundred eight".