138259355551 has 2 divisors, whose sum is σ = 138259355552. Its totient is φ = 138259355550.

The previous prime is 138259355519. The next prime is 138259355657. The reversal of 138259355551 is 155553952831.

138259355551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138259355551 - 2⁵ = 138259355519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138259355501) 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, 69129677775 + 69129677776.

It is an arithmetic number, because the mean of its divisors is an integer number (69129677776).

Almost surely, 2^138259355551 is an apocalyptic number.

138259355551 is a deficient number, since it is larger than the sum of its proper divisors (1).

138259355551 is an equidigital number, since it uses as much as digits as its factorization.

138259355551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4050000, while the sum is 52.

The spelling of 138259355551 in words is "one hundred thirty-eight billion, two hundred fifty-nine million, three hundred fifty-five thousand, five hundred fifty-one".