12776283520 has 768 divisors, whose sum is σ = 43302672000. Its totient is φ = 3576545280.

The previous prime is 12776283497. The next prime is 12776283523. The reversal of 12776283520 is 2538267721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12776283523) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 345304942 + ... + 345304978.

Almost surely, 2^12776283520 is an apocalyptic number.

12776283520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12776283520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21651336000).

12776283520 is an abundant number, since it is smaller than the sum of its proper divisors (30526388480).

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

12776283520 is a wasteful number, since it uses less digits than its factorization.

12776283520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 12776283520 in words is "twelve billion, seven hundred seventy-six million, two hundred eighty-three thousand, five hundred twenty".