13428782787 has 8 divisors (see below), whose sum is σ = 20462907136. Its totient is φ = 7673590152.

The previous prime is 13428782777. The next prime is 13428782803. The reversal of 13428782787 is 78728782431.

13428782787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13428782787 - 2¹⁵ = 13428750019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13428782747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319732903 + ... + 319732944.

It is an arithmetic number, because the mean of its divisors is an integer number (2557863392).

Almost surely, 2^13428782787 is an apocalyptic number.

13428782787 is a deficient number, since it is larger than the sum of its proper divisors (7034124349).

13428782787 is an equidigital number, since it uses as much as digits as its factorization.

13428782787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639465857.

The product of its digits is 8429568, while the sum is 57.

The spelling of 13428782787 in words is "thirteen billion, four hundred twenty-eight million, seven hundred eighty-two thousand, seven hundred eighty-seven".