138966054908 has 12 divisors (see below), whose sum is σ = 247779098280. Its totient is φ = 68172026832.

The previous prime is 138966054881. The next prime is 138966054919. The reversal of 138966054908 is 809450669831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327749918 + ... + 327750341.

It is an arithmetic number, because the mean of its divisors is an integer number (20648258190).

Almost surely, 2^138966054908 is an apocalyptic number.

It is an amenable number.

138966054908 is a deficient number, since it is larger than the sum of its proper divisors (108813043372).

138966054908 is a wasteful number, since it uses less digits than its factorization.

138966054908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655500316 (or 655500314 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 59.

The spelling of 138966054908 in words is "one hundred thirty-eight billion, nine hundred sixty-six million, fifty-four thousand, nine hundred eight".