138867353941 has 2 divisors, whose sum is σ = 138867353942. Its totient is φ = 138867353940.

The previous prime is 138867353929. The next prime is 138867353951. The reversal of 138867353941 is 149353768831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111319653316 + 27547700625 = 333646^2 + 165975^2 .

It is a cyclic number.

It is not a de Polignac number, because 138867353941 - 2⁷ = 138867353813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138867353951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69433676970 + 69433676971.

It is an arithmetic number, because the mean of its divisors is an integer number (69433676971).

Almost surely, 2^138867353941 is an apocalyptic number.

It is an amenable number.

138867353941 is a deficient number, since it is larger than the sum of its proper divisors (1).

138867353941 is an equidigital number, since it uses as much as digits as its factorization.

138867353941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13063680, while the sum is 58.

The spelling of 138867353941 in words is "one hundred thirty-eight billion, eight hundred sixty-seven million, three hundred fifty-three thousand, nine hundred forty-one".