138195023201 has 2 divisors, whose sum is σ = 138195023202. Its totient is φ = 138195023200.

The previous prime is 138195023159. The next prime is 138195023209. The reversal of 138195023201 is 102320591831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137433318400 + 761704801 = 370720^2 + 27599^2 .

It is a cyclic number.

It is not a de Polignac number, because 138195023201 - 2¹⁸ = 138194761057 is a prime.

It is not a weakly prime, because it can be changed into another prime (138195023209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69097511600 + 69097511601.

It is an arithmetic number, because the mean of its divisors is an integer number (69097511601).

Almost surely, 2^138195023201 is an apocalyptic number.

It is an amenable number.

138195023201 is a deficient number, since it is larger than the sum of its proper divisors (1).

138195023201 is an equidigital number, since it uses as much as digits as its factorization.

138195023201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The spelling of 138195023201 in words is "one hundred thirty-eight billion, one hundred ninety-five million, twenty-three thousand, two hundred one".