12458381381 has 2 divisors, whose sum is σ = 12458381382. Its totient is φ = 12458381380.

The previous prime is 12458381359. The next prime is 12458381417. The reversal of 12458381381 is 18318385421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12368776225 + 89605156 = 111215^2 + 9466^2 .

It is a cyclic number.

It is not a de Polignac number, because 12458381381 - 2¹⁰ = 12458380357 is a prime.

It is a super-2 number, since 2×12458381381² (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 (12458381081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6229190690 + 6229190691.

It is an arithmetic number, because the mean of its divisors is an integer number (6229190691).

Almost surely, 2^12458381381 is an apocalyptic number.

It is an amenable number.

12458381381 is a deficient number, since it is larger than the sum of its proper divisors (1).

12458381381 is an equidigital number, since it uses as much as digits as its factorization.

12458381381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 184320, while the sum is 44.

The spelling of 12458381381 in words is "twelve billion, four hundred fifty-eight million, three hundred eighty-one thousand, three hundred eighty-one".