13706087785 has 16 divisors (see below), whose sum is σ = 18191201616. Its totient is φ = 9847865088.

The previous prime is 13706087729. The next prime is 13706087789. The reversal of 13706087785 is 58778060731.

13706087785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 937024 + 13705150761 = 968^2 + 117069^2 .

It is a cyclic number.

It is not a de Polignac number, because 13706087785 - 2¹¹ = 13706085737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13706087789) 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 15 ways as a sum of consecutive naturals, for example, 2847094 + ... + 2851903.

It is an arithmetic number, because the mean of its divisors is an integer number (1136950101).

Almost surely, 2^13706087785 is an apocalyptic number.

It is an amenable number.

13706087785 is a deficient number, since it is larger than the sum of its proper divisors (4485113831).

13706087785 is a wasteful number, since it uses less digits than its factorization.

13706087785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5699052.

The product of its (nonzero) digits is 1975680, while the sum is 52.

The spelling of 13706087785 in words is "thirteen billion, seven hundred six million, eighty-seven thousand, seven hundred eighty-five".