12780162747 has 20 divisors (see below), whose sum is σ = 20826933336. Its totient is φ = 7745552640.

The previous prime is 12780162673. The next prime is 12780162751. The reversal of 12780162747 is 74726108721.

12780162747 is a `hidden beast` number, since 12 + 7 + 8 + 0 + 1 + 627 + 4 + 7 = 666.

It is not a de Polignac number, because 12780162747 - 2¹¹ = 12780160699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12780167747) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7170918 + ... + 7172699.

Almost surely, 2^12780162747 is an apocalyptic number.

12780162747 is a deficient number, since it is larger than the sum of its proper divisors (8046770589).

12780162747 is a wasteful number, since it uses less digits than its factorization.

12780162747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14343640 (or 14343631 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 45.

The spelling of 12780162747 in words is "twelve billion, seven hundred eighty million, one hundred sixty-two thousand, seven hundred forty-seven".