138161823024 has 80 divisors (see below), whose sum is σ = 377650332800. Its totient is φ = 43403931648.

The previous prime is 138161822983. The next prime is 138161823053. The reversal of 138161823024 is 420328161831.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216454 + ... + 568485.

It is an arithmetic number, because the mean of its divisors is an integer number (4720629160).

Almost surely, 2^138161823024 is an apocalyptic number.

It is an amenable number.

138161823024 is an abundant number, since it is smaller than the sum of its proper divisors (239488509776).

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

138161823024 is a wasteful number, since it uses less digits than its factorization.

138161823024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785162 (or 785156 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

Adding to 138161823024 its reverse (420328161831), we get a palindrome (558489984855).

The spelling of 138161823024 in words is "one hundred thirty-eight billion, one hundred sixty-one million, eight hundred twenty-three thousand, twenty-four".