138240969042832 has 40 divisors (see below), whose sum is σ = 270862253125920. Its totient is φ = 68341095356160.

The previous prime is 138240969042821. The next prime is 138240969042877. The reversal of 138240969042832 is 238240969042831.

It is a super-2 number, since 2×138240969042832² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

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, 33614863 + ... + 37502545.

It is an arithmetic number, because the mean of its divisors is an integer number (6771556328148).

Almost surely, 2^{138240969042832} is an apocalyptic number.

It is an amenable number.

138240969042832 is a deficient number, since it is larger than the sum of its proper divisors (132621284083088).

138240969042832 is a wasteful number, since it uses less digits than its factorization.

138240969042832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3912751 (or 3912745 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 61.

Subtracting 138240969042832 from its reverse (238240969042831), we obtain a palindrome (99999999999999).

The spelling of 138240969042832 in words is "one hundred thirty-eight trillion, two hundred forty billion, nine hundred sixty-nine million, forty-two thousand, eight hundred thirty-two".