138823252844662 has 64 divisors (see below), whose sum is σ = 216843605618688. Its totient is φ = 66583535760000.

The previous prime is 138823252844581. The next prime is 138823252844669. The reversal of 138823252844662 is 266448252328831.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 138823252844594 and 138823252844603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138823252844669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9149353308 + ... + 9149368480.

It is an arithmetic number, because the mean of its divisors is an integer number (3388181337792).

Almost surely, 2^{138823252844662} is an apocalyptic number.

138823252844662 is a deficient number, since it is larger than the sum of its proper divisors (78020352774026).

138823252844662 is a wasteful number, since it uses less digits than its factorization.

138823252844662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17405.

The product of its digits is 212336640, while the sum is 64.

The spelling of 138823252844662 in words is "one hundred thirty-eight trillion, eight hundred twenty-three billion, two hundred fifty-two million, eight hundred forty-four thousand, six hundred sixty-two".