11638479532170 has 32 divisors (see below), whose sum is σ = 28179539831232. Its totient is φ = 3076129102592.

The previous prime is 11638479532157. The next prime is 11638479532171. The reversal of 11638479532170 is 7123597483611.

It is a self number, because there is not a number n which added to its sum of digits gives 11638479532170.

It is not an unprimeable number, because it can be changed into a prime (11638479532171) 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 15 ways as a sum of consecutive naturals, for example, 1716586512 + ... + 1716593291.

It is an arithmetic number, because the mean of its divisors is an integer number (880610619726).

It is a 1-persistent number, because it is pandigital, but 2⋅11638479532170 = 23276959064340 is not.

Almost surely, 2^{11638479532170} is an apocalyptic number.

11638479532170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11638479532170 is an abundant number, since it is smaller than the sum of its proper divisors (16541060299062).

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

11638479532170 is a wasteful number, since it uses less digits than its factorization.

11638479532170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3433179926.

The product of its (nonzero) digits is 7620480, while the sum is 57.

The spelling of 11638479532170 in words is "eleven trillion, six hundred thirty-eight billion, four hundred seventy-nine million, five hundred thirty-two thousand, one hundred seventy".