138887290706 has 8 divisors (see below), whose sum is σ = 209921248944. Its totient is φ = 68913541060.

The previous prime is 138887290667. The next prime is 138887290783. The reversal of 138887290706 is 607092788831.

138887290706 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265051820 + ... + 265052343.

It is an arithmetic number, because the mean of its divisors is an integer number (26240156118).

Almost surely, 2^138887290706 is an apocalyptic number.

138887290706 is a deficient number, since it is larger than the sum of its proper divisors (71033958238).

138887290706 is a wasteful number, since it uses less digits than its factorization.

138887290706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530104296.

The product of its (nonzero) digits is 8128512, while the sum is 59.

The spelling of 138887290706 in words is "one hundred thirty-eight billion, eight hundred eighty-seven million, two hundred ninety thousand, seven hundred six".