13782778747 has 8 divisors (see below), whose sum is σ = 14634878256. Its totient is φ = 12935273472.

The previous prime is 13782778729. The next prime is 13782778783. The reversal of 13782778747 is 74787728731.

13782778747 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 a cyclic number.

It is not a de Polignac number, because 13782778747 - 2²³ = 13774390139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13782778147) 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, 1142373 + ... + 1154374.

It is an arithmetic number, because the mean of its divisors is an integer number (1829359782).

Almost surely, 2^13782778747 is an apocalyptic number.

13782778747 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13782778747 is a deficient number, since it is larger than the sum of its proper divisors (852099509).

13782778747 is a wasteful number, since it uses less digits than its factorization.

13782778747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297117.

The product of its digits is 25815552, while the sum is 61.

The spelling of 13782778747 in words is "thirteen billion, seven hundred eighty-two million, seven hundred seventy-eight thousand, seven hundred forty-seven".