13879451923481 has 2 divisors, whose sum is σ = 13879451923482. Its totient is φ = 13879451923480.

The previous prime is 13879451923439. The next prime is 13879451923529. The reversal of 13879451923481 is 18432915497831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13816943923225 + 62508000256 = 3717115^2 + 250016^2 .

It is a cyclic number.

It is not a de Polignac number, because 13879451923481 - 2⁶ = 13879451923417 is a prime.

It is a super-2 number, since 2×13879451923481² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13879451923781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6939725961740 + 6939725961741.

It is an arithmetic number, because the mean of its divisors is an integer number (6939725961741).

Almost surely, 2^{13879451923481} is an apocalyptic number.

It is an amenable number.

13879451923481 is a deficient number, since it is larger than the sum of its proper divisors (1).

13879451923481 is an equidigital number, since it uses as much as digits as its factorization.

13879451923481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52254720, while the sum is 65.

The spelling of 13879451923481 in words is "thirteen trillion, eight hundred seventy-nine billion, four hundred fifty-one million, nine hundred twenty-three thousand, four hundred eighty-one".