138269689435 has 16 divisors (see below), whose sum is σ = 166845060000. Its totient is φ = 110002314240.

The previous prime is 138269689433. The next prime is 138269689553. The reversal of 138269689435 is 534986962831.

It is not a de Polignac number, because 138269689435 - 2¹ = 138269689433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138269689433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1265229 + ... + 1370161.

It is an arithmetic number, because the mean of its divisors is an integer number (10427816250).

Almost surely, 2^138269689435 is an apocalyptic number.

138269689435 is a deficient number, since it is larger than the sum of its proper divisors (28575370565).

138269689435 is a wasteful number, since it uses less digits than its factorization.

138269689435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106398.

The product of its digits is 67184640, while the sum is 64.

The spelling of 138269689435 in words is "one hundred thirty-eight billion, two hundred sixty-nine million, six hundred eighty-nine thousand, four hundred thirty-five".