11173385817620 has 36 divisors (see below), whose sum is σ = 25407882668700. Its totient is φ = 4125557839104.

The previous prime is 11173385817547. The next prime is 11173385817631. The reversal of 11173385817620 is 2671858337111.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 2174993745796 + 8998392071824 = 1474786^2 + 2999732^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1652864345 + ... + 1652871104.

It is an arithmetic number, because the mean of its divisors is an integer number (705774518575).

Almost surely, 2^{11173385817620} is an apocalyptic number.

11173385817620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11173385817620 is an abundant number, since it is smaller than the sum of its proper divisors (14234496851080).

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

11173385817620 is a wasteful number, since it uses less digits than its factorization.

11173385817620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3305735484 (or 3305735469 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 53.

The spelling of 11173385817620 in words is "eleven trillion, one hundred seventy-three billion, three hundred eighty-five million, eight hundred seventeen thousand, six hundred twenty".