138668576246 has 16 divisors (see below), whose sum is σ = 215515059264. Its totient is φ = 66863389824.

The previous prime is 138668576191. The next prime is 138668576251. The reversal of 138668576246 is 642675866831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8283230 + ... + 8299953.

It is an arithmetic number, because the mean of its divisors is an integer number (13469691204).

Almost surely, 2^138668576246 is an apocalyptic number.

138668576246 is a deficient number, since it is larger than the sum of its proper divisors (76846483018).

138668576246 is a wasteful number, since it uses less digits than its factorization.

138668576246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16583335.

The product of its digits is 69672960, while the sum is 62.

The spelling of 138668576246 in words is "one hundred thirty-eight billion, six hundred sixty-eight million, five hundred seventy-six thousand, two hundred forty-six".