11681257139 has 2 divisors, whose sum is σ = 11681257140. Its totient is φ = 11681257138.

The previous prime is 11681257129. The next prime is 11681257177. The reversal of 11681257139 is 93175218611.

11681257139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (93175218611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11681257139 - 2¹⁶ = 11681191603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11681257139.

It is not a weakly prime, because it can be changed into another prime (11681257109) 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 as a sum of consecutive naturals, namely, 5840628569 + 5840628570.

It is an arithmetic number, because the mean of its divisors is an integer number (5840628570).

Almost surely, 2^11681257139 is an apocalyptic number.

11681257139 is a deficient number, since it is larger than the sum of its proper divisors (1).

11681257139 is an equidigital number, since it uses as much as digits as its factorization.

11681257139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 44.

The spelling of 11681257139 in words is "eleven billion, six hundred eighty-one million, two hundred fifty-seven thousand, one hundred thirty-nine".