138416246641 has 2 divisors, whose sum is σ = 138416246642. Its totient is φ = 138416246640.

The previous prime is 138416246629. The next prime is 138416246699. The reversal of 138416246641 is 146642614831.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122847446016 + 15568800625 = 350496^2 + 124775^2 .

It is a cyclic number.

It is not a de Polignac number, because 138416246641 - 2¹³ = 138416238449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138416246591 and 138416246600.

It is not a weakly prime, because it can be changed into another prime (138416246611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69208123320 + 69208123321.

It is an arithmetic number, because the mean of its divisors is an integer number (69208123321).

Almost surely, 2^138416246641 is an apocalyptic number.

It is an amenable number.

138416246641 is a deficient number, since it is larger than the sum of its proper divisors (1).

138416246641 is an equidigital number, since it uses as much as digits as its factorization.

138416246641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 663552, while the sum is 46.

The spelling of 138416246641 in words is "one hundred thirty-eight billion, four hundred sixteen million, two hundred forty-six thousand, six hundred forty-one".