13889072665081 has 16 divisors (see below), whose sum is σ = 14144160063040. Its totient is φ = 13634883472320.

The previous prime is 13889072665051. The next prime is 13889072665103. The reversal of 13889072665081 is 18056627098831.

It is a cyclic number.

It is not a de Polignac number, because 13889072665081 - 2¹⁹ = 13889072140793 is a prime.

It is a super-2 number, since 2×13889072665081² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13889072665001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119373571 + ... + 119489863.

It is an arithmetic number, because the mean of its divisors is an integer number (884010003940).

Almost surely, 2^{13889072665081} is an apocalyptic number.

It is an amenable number.

13889072665081 is a deficient number, since it is larger than the sum of its proper divisors (255087397959).

13889072665081 is a wasteful number, since it uses less digits than its factorization.

13889072665081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120136.

The product of its (nonzero) digits is 34836480, while the sum is 64.

The spelling of 13889072665081 in words is "thirteen trillion, eight hundred eighty-nine billion, seventy-two million, six hundred sixty-five thousand, eighty-one".