12784824105 has 16 divisors (see below), whose sum is σ = 20464916544. Its totient is φ = 6815506880.

The previous prime is 12784824089. The next prime is 12784824127. The reversal of 12784824105 is 50142848721.

It is not a de Polignac number, because 12784824105 - 2⁴ = 12784824089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156951 + ... + 224060.

It is an arithmetic number, because the mean of its divisors is an integer number (1279057284).

Almost surely, 2^12784824105 is an apocalyptic number.

12784824105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12784824105 is a deficient number, since it is larger than the sum of its proper divisors (7680092439).

12784824105 is a wasteful number, since it uses less digits than its factorization.

12784824105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383256.

The product of its (nonzero) digits is 143360, while the sum is 42.

The spelling of 12784824105 in words is "twelve billion, seven hundred eighty-four million, eight hundred twenty-four thousand, one hundred five".