13748082581 has 2 divisors, whose sum is σ = 13748082582. Its totient is φ = 13748082580.

The previous prime is 13748082547. The next prime is 13748082587. The reversal of 13748082581 is 18528084731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12966376900 + 781705681 = 113870^2 + 27959^2 .

It is a cyclic number.

It is not a de Polignac number, because 13748082581 - 2²⁶ = 13680973717 is a prime.

It is a super-2 number, since 2×13748082581² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13748082587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6874041290 + 6874041291.

It is an arithmetic number, because the mean of its divisors is an integer number (6874041291).

Almost surely, 2^13748082581 is an apocalyptic number.

It is an amenable number.

13748082581 is a deficient number, since it is larger than the sum of its proper divisors (1).

13748082581 is an equidigital number, since it uses as much as digits as its factorization.

13748082581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 430080, while the sum is 47.

The spelling of 13748082581 in words is "thirteen billion, seven hundred forty-eight million, eighty-two thousand, five hundred eighty-one".