138413942827 has 2 divisors, whose sum is σ = 138413942828. Its totient is φ = 138413942826.

The previous prime is 138413942813. The next prime is 138413942861. The reversal of 138413942827 is 728249314831.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138413942827 is a prime.

It is not a weakly prime, because it can be changed into another prime (138413942867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69206971413 + 69206971414.

It is an arithmetic number, because the mean of its divisors is an integer number (69206971414).

Almost surely, 2^138413942827 is an apocalyptic number.

138413942827 is a deficient number, since it is larger than the sum of its proper divisors (1).

138413942827 is an equidigital number, since it uses as much as digits as its factorization.

138413942827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2322432, while the sum is 52.

The spelling of 138413942827 in words is "one hundred thirty-eight billion, four hundred thirteen million, nine hundred forty-two thousand, eight hundred twenty-seven".