138424841567 has 2 divisors, whose sum is σ = 138424841568. Its totient is φ = 138424841566.

The previous prime is 138424841549. The next prime is 138424841593. The reversal of 138424841567 is 765148424831.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138424841567 is a prime.

It is a super-2 number, since 2×138424841567² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138424841507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69212420783 + 69212420784.

It is an arithmetic number, because the mean of its divisors is an integer number (69212420784).

Almost surely, 2^138424841567 is an apocalyptic number.

138424841567 is a deficient number, since it is larger than the sum of its proper divisors (1).

138424841567 is an equidigital number, since it uses as much as digits as its factorization.

138424841567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5160960, while the sum is 53.

The spelling of 138424841567 in words is "one hundred thirty-eight billion, four hundred twenty-four million, eight hundred forty-one thousand, five hundred sixty-seven".