138223084568 has 32 divisors (see below), whose sum is σ = 263461572000. Its totient is φ = 67971429120.

The previous prime is 138223084529. The next prime is 138223084583. The reversal of 138223084568 is 865480322831.

It is a super-2 number, since 2×138223084568² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65183 + ... + 529806.

It is an arithmetic number, because the mean of its divisors is an integer number (8233174125).

Almost surely, 2^138223084568 is an apocalyptic number.

It is an amenable number.

138223084568 is a deficient number, since it is larger than the sum of its proper divisors (125238487432).

138223084568 is a wasteful number, since it uses less digits than its factorization.

138223084568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595475 (or 595471 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 50.

The spelling of 138223084568 in words is "one hundred thirty-eight billion, two hundred twenty-three million, eighty-four thousand, five hundred sixty-eight".