138852040870537 has 2 divisors, whose sum is σ = 138852040870538. Its totient is φ = 138852040870536.

The previous prime is 138852040870513. The next prime is 138852040870643. The reversal of 138852040870537 is 735078040258831.

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., 78957814844041 + 59894226026496 = 8885821^2 + 7739136^2 .

It is a cyclic number.

It is not a de Polignac number, because 138852040870537 - 2¹⁹ = 138852040346249 is a prime.

It is not a weakly prime, because it can be changed into another prime (138852040070537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69426020435268 + 69426020435269.

It is an arithmetic number, because the mean of its divisors is an integer number (69426020435269).

Almost surely, 2^{138852040870537} is an apocalyptic number.

It is an amenable number.

138852040870537 is a deficient number, since it is larger than the sum of its proper divisors (1).

138852040870537 is an equidigital number, since it uses as much as digits as its factorization.

138852040870537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45158400, while the sum is 61.

The spelling of 138852040870537 in words is "one hundred thirty-eight trillion, eight hundred fifty-two billion, forty million, eight hundred seventy thousand, five hundred thirty-seven".