138195023159 has 2 divisors, whose sum is σ = 138195023160. Its totient is φ = 138195023158.

The previous prime is 138195023147. The next prime is 138195023201. The reversal of 138195023159 is 951320591831.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138195023159 - 2¹² = 138195019063 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138195053159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69097511579 + 69097511580.

It is an arithmetic number, because the mean of its divisors is an integer number (69097511580).

Almost surely, 2^138195023159 is an apocalyptic number.

138195023159 is a deficient number, since it is larger than the sum of its proper divisors (1).

138195023159 is an equidigital number, since it uses as much as digits as its factorization.

138195023159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 291600, while the sum is 47.

The spelling of 138195023159 in words is "one hundred thirty-eight billion, one hundred ninety-five million, twenty-three thousand, one hundred fifty-nine".