138556700817263 has 2 divisors, whose sum is σ = 138556700817264. Its totient is φ = 138556700817262.

The previous prime is 138556700817251. The next prime is 138556700817287. The reversal of 138556700817263 is 362718007655831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138556700817263 - 2³² = 138552405849967 is a prime.

It is a super-2 number, since 2×138556700817263² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 138556700817196 and 138556700817205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138556700817203) 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, 69278350408631 + 69278350408632.

It is an arithmetic number, because the mean of its divisors is an integer number (69278350408632).

Almost surely, 2^{138556700817263} is an apocalyptic number.

138556700817263 is a deficient number, since it is larger than the sum of its proper divisors (1).

138556700817263 is an equidigital number, since it uses as much as digits as its factorization.

138556700817263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50803200, while the sum is 62.

The spelling of 138556700817263 in words is "one hundred thirty-eight trillion, five hundred fifty-six billion, seven hundred million, eight hundred seventeen thousand, two hundred sixty-three".