138284557333 has 8 divisors (see below), whose sum is σ = 150396305976. Its totient is φ = 126383448000.

The previous prime is 138284557331. The next prime is 138284557379. The reversal of 138284557333 is 333755482831.

It can be written as a sum of positive squares in 4 ways, for example, as 21117321124 + 117167236209 = 145318^2 + 342297^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138284557333 - 2¹ = 138284557331 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138284557331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52658458 + ... + 52661083.

It is an arithmetic number, because the mean of its divisors is an integer number (18799538247).

Almost surely, 2^138284557333 is an apocalyptic number.

138284557333 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

138284557333 is a deficient number, since it is larger than the sum of its proper divisors (12111748643).

138284557333 is a wasteful number, since it uses less digits than its factorization.

138284557333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105319655.

The product of its digits is 7257600, while the sum is 52.

The spelling of 138284557333 in words is "one hundred thirty-eight billion, two hundred eighty-four million, five hundred fifty-seven thousand, three hundred thirty-three".