11231555424 has 192 divisors, whose sum is σ = 32100284160. Its totient is φ = 3426416640.

The previous prime is 11231555417. The next prime is 11231555429. The reversal of 11231555424 is 42455513211.

It is a super-2 number, since 2×11231555424² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231555429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11000034 + ... + 11001054.

It is an arithmetic number, because the mean of its divisors is an integer number (167188980).

Almost surely, 2^11231555424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11231555424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16050142080).

11231555424 is an abundant number, since it is smaller than the sum of its proper divisors (20868728736).

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

11231555424 is a wasteful number, since it uses less digits than its factorization.

11231555424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253 (or 1245 counting only the distinct ones).

The product of its digits is 24000, while the sum is 33.

The spelling of 11231555424 in words is "eleven billion, two hundred thirty-one million, five hundred fifty-five thousand, four hundred twenty-four".