13140399385 has 4 divisors (see below), whose sum is σ = 15768479268. Its totient is φ = 10512319504.

The previous prime is 13140399341. The next prime is 13140399421. The reversal of 13140399385 is 58399304131.

13140399385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5491847449 + 7648551936 = 74107^2 + 87456^2 .

It is a cyclic number.

It is not a de Polignac number, because 13140399385 - 2¹¹ = 13140397337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1314039934 + ... + 1314039943.

It is an arithmetic number, because the mean of its divisors is an integer number (3942119817).

Almost surely, 2^13140399385 is an apocalyptic number.

It is an amenable number.

13140399385 is a deficient number, since it is larger than the sum of its proper divisors (2628079883).

13140399385 is an equidigital number, since it uses as much as digits as its factorization.

13140399385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628079882.

The product of its (nonzero) digits is 349920, while the sum is 46.

The spelling of 13140399385 in words is "thirteen billion, one hundred forty million, three hundred ninety-nine thousand, three hundred eighty-five".