138157344325446 has 16 divisors (see below), whose sum is σ = 276315603369024. Its totient is φ = 46052295655464.

The previous prime is 138157344325423. The next prime is 138157344325447. The reversal of 138157344325446 is 644523443751831.

It is a self number, because there is not a number n which added to its sum of digits gives 138157344325446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138157344325447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36141916 + ... + 39781311.

It is an arithmetic number, because the mean of its divisors is an integer number (17269725210564).

Almost surely, 2^{138157344325446} is an apocalyptic number.

138157344325446 is an abundant number, since it is smaller than the sum of its proper divisors (138158259043578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138157344325446 is a wasteful number, since it uses less digits than its factorization.

138157344325446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76226515.

The product of its digits is 116121600, while the sum is 60.

The spelling of 138157344325446 in words is "one hundred thirty-eight trillion, one hundred fifty-seven billion, three hundred forty-four million, three hundred twenty-five thousand, four hundred forty-six".