13333861381 has 2 divisors, whose sum is σ = 13333861382. Its totient is φ = 13333861380.

The previous prime is 13333861361. The next prime is 13333861393. The reversal of 13333861381 is 18316833331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9333298881 + 4000562500 = 96609^2 + 63250^2 .

It is an emirp because it is prime and its reverse (18316833331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13333861381 - 2⁷ = 13333861253 is a prime.

It is a super-2 number, since 2×13333861381² (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 (13333861301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6666930690 + 6666930691.

It is an arithmetic number, because the mean of its divisors is an integer number (6666930691).

Almost surely, 2^13333861381 is an apocalyptic number.

It is an amenable number.

13333861381 is a deficient number, since it is larger than the sum of its proper divisors (1).

13333861381 is an equidigital number, since it uses as much as digits as its factorization.

13333861381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 40.

The spelling of 13333861381 in words is "thirteen billion, three hundred thirty-three million, eight hundred sixty-one thousand, three hundred eighty-one".