138500203502 has 4 divisors (see below), whose sum is σ = 207750305256. Its totient is φ = 69250101750.

The previous prime is 138500203477. The next prime is 138500203537. The reversal of 138500203502 is 205302005831.

138500203502 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 congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 34625050874 + ... + 34625050877.

It is an arithmetic number, because the mean of its divisors is an integer number (51937576314).

Almost surely, 2^138500203502 is an apocalyptic number.

138500203502 is a deficient number, since it is larger than the sum of its proper divisors (69250101754).

138500203502 is an equidigital number, since it uses as much as digits as its factorization.

138500203502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69250101753.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 138500203502 in words is "one hundred thirty-eight billion, five hundred million, two hundred three thousand, five hundred two".