138360435959 has 4 divisors (see below), whose sum is σ = 139786832304. Its totient is φ = 136934039616.

The previous prime is 138360435931. The next prime is 138360435989. The reversal of 138360435959 is 959534063831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 959534063831 = 7 ⋅137076294833.

It is a cyclic number.

It is not a de Polignac number, because 138360435959 - 2¹² = 138360431863 is a prime.

It is a super-2 number, since 2×138360435959² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138360435919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 713198027 + ... + 713198220.

It is an arithmetic number, because the mean of its divisors is an integer number (34946708076).

Almost surely, 2^138360435959 is an apocalyptic number.

138360435959 is a deficient number, since it is larger than the sum of its proper divisors (1426396345).

138360435959 is an equidigital number, since it uses as much as digits as its factorization.

138360435959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426396344.

The product of its (nonzero) digits is 10497600, while the sum is 56.

The spelling of 138360435959 in words is "one hundred thirty-eight billion, three hundred sixty million, four hundred thirty-five thousand, nine hundred fifty-nine".