138387707082 has 12 divisors (see below), whose sum is σ = 299840032050. Its totient is φ = 46129235688.

The previous prime is 138387707047. The next prime is 138387707083. The reversal of 138387707082 is 280707783831.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 78523808841 + 59863898241 = 280221^2 + 244671^2 .

It is not an unprimeable number, because it can be changed into a prime (138387707083) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3844102957 + ... + 3844102992.

Almost surely, 2^138387707082 is an apocalyptic number.

138387707082 is an abundant number, since it is smaller than the sum of its proper divisors (161452324968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138387707082 is a wasteful number, since it uses less digits than its factorization.

138387707082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7688205957 (or 7688205954 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The spelling of 138387707082 in words is "one hundred thirty-eight billion, three hundred eighty-seven million, seven hundred seven thousand, eighty-two".