138076263989 has 4 divisors (see below), whose sum is σ = 138125005356. Its totient is φ = 138027522624.

The previous prime is 138076263973. The next prime is 138076264013. The reversal of 138076263989 is 989362670831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67686867889 + 70389396100 = 260167^2 + 265310^2 .

It is a cyclic number.

It is not a de Polignac number, because 138076263989 - 2⁴ = 138076263973 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 (138076253989) 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, 24366434 + ... + 24372099.

It is an arithmetic number, because the mean of its divisors is an integer number (34531251339).

Almost surely, 2^138076263989 is an apocalyptic number.

It is an amenable number.

138076263989 is a deficient number, since it is larger than the sum of its proper divisors (48741367).

138076263989 is an equidigital number, since it uses as much as digits as its factorization.

138076263989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48741366.

The product of its (nonzero) digits is 23514624, while the sum is 62.

The spelling of 138076263989 in words is "one hundred thirty-eight billion, seventy-six million, two hundred sixty-three thousand, nine hundred eighty-nine".