138321005465612 has 48 divisors (see below), whose sum is σ = 250992662485824. Its totient is φ = 66661795200000.

The previous prime is 138321005465611. The next prime is 138321005465663. The reversal of 138321005465612 is 216564500123831.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (138321005465611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12121889 + ... + 20581112.

It is an arithmetic number, because the mean of its divisors is an integer number (5229013801788).

Almost surely, 2^{138321005465612} is an apocalyptic number.

It is an amenable number.

138321005465612 is a deficient number, since it is larger than the sum of its proper divisors (112671657020212).

138321005465612 is a wasteful number, since it uses less digits than its factorization.

138321005465612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32703410 (or 32703408 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 138321005465612 in words is "one hundred thirty-eight trillion, three hundred twenty-one billion, five million, four hundred sixty-five thousand, six hundred twelve".