138835243365 has 64 divisors (see below), whose sum is σ = 282826252800. Its totient is φ = 56565218304.

The previous prime is 138835243363. The next prime is 138835243397. The reversal of 138835243365 is 563342538831.

It is not a de Polignac number, because 138835243365 - 2¹ = 138835243363 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138835243363) by changing a digit.

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 in 63 ways as a sum of consecutive naturals, for example, 1714050 + ... + 1793219.

It is an arithmetic number, because the mean of its divisors is an integer number (4419160200).

Almost surely, 2^138835243365 is an apocalyptic number.

138835243365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138835243365 is an abundant number, since it is smaller than the sum of its proper divisors (143991009435).

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

138835243365 is a wasteful number, since it uses less digits than its factorization.

138835243365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3507326.

The product of its digits is 6220800, while the sum is 51.

The spelling of 138835243365 in words is "one hundred thirty-eight billion, eight hundred thirty-five million, two hundred forty-three thousand, three hundred sixty-five".