11638909878339 has 8 divisors (see below), whose sum is σ = 15937966680400. Its totient is φ = 7549563164256.

The previous prime is 11638909878329. The next prime is 11638909878353. The reversal of 11638909878339 is 93387890983611.

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

It is not a de Polignac number, because 11638909878339 - 2⁸ = 11638909878083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11638909878329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52427521864 + ... + 52427522085.

It is an arithmetic number, because the mean of its divisors is an integer number (1992245835050).

Almost surely, 2^{11638909878339} is an apocalyptic number.

11638909878339 is a deficient number, since it is larger than the sum of its proper divisors (4299056802061).

11638909878339 is a wasteful number, since it uses less digits than its factorization.

11638909878339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104855043989.

The product of its (nonzero) digits is 423263232, while the sum is 75.

The spelling of 11638909878339 in words is "eleven trillion, six hundred thirty-eight billion, nine hundred nine million, eight hundred seventy-eight thousand, three hundred thirty-nine".