12782637546 has 24 divisors (see below), whose sum is σ = 29739198240. Its totient is φ = 3652182072.

The previous prime is 12782637449. The next prime is 12782637559. The reversal of 12782637546 is 64573628721.

It is a happy number.

12782637546 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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, 21738886 + ... + 21739473.

It is an arithmetic number, because the mean of its divisors is an integer number (1239133260).

Almost surely, 2^12782637546 is an apocalyptic number.

12782637546 is an abundant number, since it is smaller than the sum of its proper divisors (16956560694).

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

12782637546 is a wasteful number, since it uses less digits than its factorization.

12782637546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43478378 (or 43478371 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 51.

The spelling of 12782637546 in words is "twelve billion, seven hundred eighty-two million, six hundred thirty-seven thousand, five hundred forty-six".