138622952321 has 16 divisors (see below), whose sum is σ = 176574130560. Its totient is φ = 105944474880.

The previous prime is 138622952291. The next prime is 138622952333. The reversal of 138622952321 is 123259226831.

It is a cyclic number.

It is not a de Polignac number, because 138622952321 - 2⁶ = 138622952257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138622952381) 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 in 15 ways as a sum of consecutive naturals, for example, 30652970 + ... + 30657491.

It is an arithmetic number, because the mean of its divisors is an integer number (11035883160).

Almost surely, 2^138622952321 is an apocalyptic number.

It is an amenable number.

138622952321 is a deficient number, since it is larger than the sum of its proper divisors (37951178239).

138622952321 is a wasteful number, since it uses less digits than its factorization.

138622952321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61310504.

The product of its digits is 311040, while the sum is 44.

The spelling of 138622952321 in words is "one hundred thirty-eight billion, six hundred twenty-two million, nine hundred fifty-two thousand, three hundred twenty-one".