138145414268 has 24 divisors (see below), whose sum is σ = 247724616384. Its totient is φ = 67367955200.

The previous prime is 138145414259. The next prime is 138145414271. The reversal of 138145414268 is 862414541831.

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, 435128 + ... + 682368.

It is an arithmetic number, because the mean of its divisors is an integer number (10321859016).

Almost surely, 2^138145414268 is an apocalyptic number.

It is an amenable number.

138145414268 is a deficient number, since it is larger than the sum of its proper divisors (109579202116).

138145414268 is a wasteful number, since it uses less digits than its factorization.

138145414268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250693 (or 250691 counting only the distinct ones).

The product of its digits is 737280, while the sum is 47.

The spelling of 138145414268 in words is "one hundred thirty-eight billion, one hundred forty-five million, four hundred fourteen thousand, two hundred sixty-eight".