138436072484 has 6 divisors (see below), whose sum is σ = 242263126854. Its totient is φ = 69218036240.

The previous prime is 138436072457. The next prime is 138436072519. The reversal of 138436072484 is 484270634831.

It can be written as a sum of positive squares in only one way, i.e., 135919043584 + 2517028900 = 368672^2 + 50170^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17304509057 + ... + 17304509064.

It is an arithmetic number, because the mean of its divisors is an integer number (40377187809).

Almost surely, 2^138436072484 is an apocalyptic number.

It is an amenable number.

138436072484 is a deficient number, since it is larger than the sum of its proper divisors (103827054370).

138436072484 is a wasteful number, since it uses less digits than its factorization.

138436072484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34609018125 (or 34609018123 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 50.

The spelling of 138436072484 in words is "one hundred thirty-eight billion, four hundred thirty-six million, seventy-two thousand, four hundred eighty-four".