11938689655904 has 96 divisors (see below), whose sum is σ = 27174246083712. Its totient is φ = 5102776576000.

The previous prime is 11938689655901. The next prime is 11938689655909. The reversal of 11938689655904 is 40955698683911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11938689655901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5614199 + ... + 7442889.

It is an arithmetic number, because the mean of its divisors is an integer number (283065063372).

Almost surely, 2^{11938689655904} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11938689655904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13587123041856).

11938689655904 is an abundant number, since it is smaller than the sum of its proper divisors (15235556427808).

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

11938689655904 is a wasteful number, since it uses less digits than its factorization.

11938689655904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829820 (or 1829812 counting only the distinct ones).

The product of its (nonzero) digits is 503884800, while the sum is 74.

The spelling of 11938689655904 in words is "eleven trillion, nine hundred thirty-eight billion, six hundred eighty-nine million, six hundred fifty-five thousand, nine hundred four".