138152508007 has 4 divisors (see below), whose sum is σ = 138522890440. Its totient is φ = 137782125576.

The previous prime is 138152508001. The next prime is 138152508031. The reversal of 138152508007 is 700805251831.

138152508007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138152508007 is a prime.

It is a super-2 number, since 2×138152508007² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138152508001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185190657 + ... + 185191402.

It is an arithmetic number, because the mean of its divisors is an integer number (34630722610).

Almost surely, 2^138152508007 is an apocalyptic number.

138152508007 is a deficient number, since it is larger than the sum of its proper divisors (370382433).

138152508007 is an equidigital number, since it uses as much as digits as its factorization.

138152508007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370382432.

The product of its (nonzero) digits is 67200, while the sum is 40.

Adding to 138152508007 its reverse (700805251831), we get a palindrome (838957759838).

The spelling of 138152508007 in words is "one hundred thirty-eight billion, one hundred fifty-two million, five hundred eight thousand, seven".