138841193041 has 2 divisors, whose sum is σ = 138841193042. Its totient is φ = 138841193040.

The previous prime is 138841192967. The next prime is 138841193089. The reversal of 138841193041 is 140391148831.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136453404816 + 2387788225 = 369396^2 + 48865^2 .

It is a cyclic number.

It is not a de Polignac number, because 138841193041 - 2¹¹ = 138841190993 is a prime.

It is not a weakly prime, because it can be changed into another prime (138841193941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69420596520 + 69420596521.

It is an arithmetic number, because the mean of its divisors is an integer number (69420596521).

Almost surely, 2^138841193041 is an apocalyptic number.

It is an amenable number.

138841193041 is a deficient number, since it is larger than the sum of its proper divisors (1).

138841193041 is an equidigital number, since it uses as much as digits as its factorization.

138841193041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 138841193041 in words is "one hundred thirty-eight billion, eight hundred forty-one million, one hundred ninety-three thousand, forty-one".