138680240012 has 12 divisors (see below), whose sum is σ = 245192383800. Its totient is φ = 68625273216.

The previous prime is 138680240011. The next prime is 138680240029. The reversal of 138680240012 is 210042086831.

It is not an unprimeable number, because it can be changed into a prime (138680240011) by changing a digit.

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, 178711262 + ... + 178712037.

It is an arithmetic number, because the mean of its divisors is an integer number (20432698650).

Almost surely, 2^138680240012 is an apocalyptic number.

It is an amenable number.

138680240012 is a deficient number, since it is larger than the sum of its proper divisors (106512143788).

138680240012 is a wasteful number, since it uses less digits than its factorization.

138680240012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357423400 (or 357423398 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The spelling of 138680240012 in words is "one hundred thirty-eight billion, six hundred eighty million, two hundred forty thousand, twelve".