138015073412 has 12 divisors (see below), whose sum is σ = 244834959516. Its totient is φ = 68062227840.

The previous prime is 138015073411. The next prime is 138015073421. The reversal of 138015073412 is 214370510831.

It can be written as a sum of positive squares in 2 ways, for example, as 73410651136 + 64604422276 = 270944^2 + 254174^2 .

It is not an unprimeable number, because it can be changed into a prime (138015073411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236326889 + ... + 236327472.

It is an arithmetic number, because the mean of its divisors is an integer number (20402913293).

Almost surely, 2^138015073412 is an apocalyptic number.

It is an amenable number.

138015073412 is a deficient number, since it is larger than the sum of its proper divisors (106819886104).

138015073412 is a wasteful number, since it uses less digits than its factorization.

138015073412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472654438 (or 472654436 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 138015073412 in words is "one hundred thirty-eight billion, fifteen million, seventy-three thousand, four hundred twelve".