138555917363 has 2 divisors, whose sum is σ = 138555917364. Its totient is φ = 138555917362.

The previous prime is 138555917359. The next prime is 138555917369. The reversal of 138555917363 is 363719555831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138555917363 - 2² = 138555917359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138555917299 and 138555917308.

It is not a weakly prime, because it can be changed into another prime (138555917369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69277958681 + 69277958682.

It is an arithmetic number, because the mean of its divisors is an integer number (69277958682).

Almost surely, 2^138555917363 is an apocalyptic number.

138555917363 is a deficient number, since it is larger than the sum of its proper divisors (1).

138555917363 is an equidigital number, since it uses as much as digits as its factorization.

138555917363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206000, while the sum is 56.

The spelling of 138555917363 in words is "one hundred thirty-eight billion, five hundred fifty-five million, nine hundred seventeen thousand, three hundred sixty-three".