11173120320 has 224 divisors, whose sum is σ = 37123469568. Its totient is φ = 2841772032.

The previous prime is 11173120313. The next prime is 11173120349. The reversal of 11173120320 is 2302137111.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12739722 + ... + 12740598.

Almost surely, 2^11173120320 is an apocalyptic number.

11173120320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11173120320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18561734784).

11173120320 is an abundant number, since it is smaller than the sum of its proper divisors (25950349248).

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

11173120320 is a wasteful number, since it uses less digits than its factorization.

11173120320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497 (or 1487 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

Adding to 11173120320 its reverse (2302137111), we get a palindrome (13475257431).

The spelling of 11173120320 in words is "eleven billion, one hundred seventy-three million, one hundred twenty thousand, three hundred twenty".