138340359436 has 12 divisors (see below), whose sum is σ = 242330452560. Its totient is φ = 69103087280.

The previous prime is 138340359413. The next prime is 138340359473. The reversal of 138340359436 is 634953043831.

It is a self number, because there is not a number n which added to its sum of digits gives 138340359436.

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 3 ways as a sum of consecutive naturals, for example, 16768471 + ... + 16776718.

It is an arithmetic number, because the mean of its divisors is an integer number (20194204380).

Almost surely, 2^138340359436 is an apocalyptic number.

It is an amenable number.

138340359436 is a deficient number, since it is larger than the sum of its proper divisors (103990093124).

138340359436 is a wasteful number, since it uses less digits than its factorization.

138340359436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33546224 (or 33546222 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 49.

The spelling of 138340359436 in words is "one hundred thirty-eight billion, three hundred forty million, three hundred fifty-nine thousand, four hundred thirty-six".