138850006685566 has 32 divisors (see below), whose sum is σ = 239174684179200. Its totient is φ = 59790066770880.

The previous prime is 138850006685497. The next prime is 138850006685587. The reversal of 138850006685566 is 665586600058831.

It is a congruent number.

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, 8925511 + ... + 18904093.

It is an arithmetic number, because the mean of its divisors is an integer number (7474208880600).

Almost surely, 2^{138850006685566} is an apocalyptic number.

138850006685566 is a deficient number, since it is larger than the sum of its proper divisors (100324677493634).

138850006685566 is a wasteful number, since it uses less digits than its factorization.

138850006685566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10011904.

The product of its (nonzero) digits is 248832000, while the sum is 67.

The spelling of 138850006685566 in words is "one hundred thirty-eight trillion, eight hundred fifty billion, six million, six hundred eighty-five thousand, five hundred sixty-six".