11638881054474 has 16 divisors (see below), whose sum is σ = 23278295414880. Its totient is φ = 3879538133840.

The previous prime is 11638881054457. The next prime is 11638881054497. The reversal of 11638881054474 is 47445018883611.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21937089 + ... + 22461380.

It is an arithmetic number, because the mean of its divisors is an integer number (1454893463430).

Almost surely, 2^{11638881054474} is an apocalyptic number.

11638881054474 is an abundant number, since it is smaller than the sum of its proper divisors (11639414360406).

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

11638881054474 is a wasteful number, since it uses less digits than its factorization.

11638881054474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44442165.

The product of its (nonzero) digits is 20643840, while the sum is 60.

The spelling of 11638881054474 in words is "eleven trillion, six hundred thirty-eight billion, eight hundred eighty-one million, fifty-four thousand, four hundred seventy-four".