11113555320 has 512 divisors, whose sum is σ = 44205004800. Its totient is φ = 2430590976.

The previous prime is 11113555267. The next prime is 11113555337. The reversal of 11113555320 is 2355531111.

11113555320 is a `hidden beast` number, since 11 + 113 + 5 + 5 + 532 + 0 = 666.

It is a super-2 number, since 2×11113555320² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 18740944 + ... + 18741536.

It is an arithmetic number, because the mean of its divisors is an integer number (86337900).

Almost surely, 2^11113555320 is an apocalyptic number.

11113555320 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 11113555320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22102502400).

11113555320 is an abundant number, since it is smaller than the sum of its proper divisors (33091449480).

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

11113555320 is a wasteful number, since it uses less digits than its factorization.

11113555320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The spelling of 11113555320 in words is "eleven billion, one hundred thirteen million, five hundred fifty-five thousand, three hundred twenty".