13124066381 has 2 divisors, whose sum is σ = 13124066382. Its totient is φ = 13124066380.

The previous prime is 13124066321. The next prime is 13124066401. The reversal of 13124066381 is 18366042131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12195889225 + 928177156 = 110435^2 + 30466^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13124066381 is a prime.

It is a super-2 number, since 2×13124066381² (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 (13124066321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6562033190 + 6562033191.

It is an arithmetic number, because the mean of its divisors is an integer number (6562033191).

Almost surely, 2^13124066381 is an apocalyptic number.

It is an amenable number.

13124066381 is a deficient number, since it is larger than the sum of its proper divisors (1).

13124066381 is an equidigital number, since it uses as much as digits as its factorization.

13124066381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 13124066381 in words is "thirteen billion, one hundred twenty-four million, sixty-six thousand, three hundred eighty-one".