138236680501919 has 2 divisors, whose sum is σ = 138236680501920. Its totient is φ = 138236680501918.

The previous prime is 138236680501901. The next prime is 138236680501939. The reversal of 138236680501919 is 919105086632831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138236680501919 - 2³² = 138232385534623 is a prime.

It is a super-2 number, since 2×138236680501919² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138236680501939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69118340250959 + 69118340250960.

It is an arithmetic number, because the mean of its divisors is an integer number (69118340250960).

Almost surely, 2^{138236680501919} is an apocalyptic number.

138236680501919 is a deficient number, since it is larger than the sum of its proper divisors (1).

138236680501919 is an equidigital number, since it uses as much as digits as its factorization.

138236680501919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16796160, while the sum is 62.

The spelling of 138236680501919 in words is "one hundred thirty-eight trillion, two hundred thirty-six billion, six hundred eighty million, five hundred one thousand, nine hundred nineteen".