11055431504 has 120 divisors (see below), whose sum is σ = 25190028360. Its totient is φ = 4666346496.

The previous prime is 11055431503. The next prime is 11055431521. The reversal of 11055431504 is 40513455011.

It can be written as a sum of positive squares in 4 ways, for example, as 2710243600 + 8345187904 = 52060^2 + 91352^2 .

It is a super-3 number, since 3×11055431504³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11055431503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2175014 + ... + 2180090.

It is an arithmetic number, because the mean of its divisors is an integer number (209916903).

Almost surely, 2^11055431504 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 11055431504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12595014180).

11055431504 is an abundant number, since it is smaller than the sum of its proper divisors (14134596856).

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

11055431504 is a wasteful number, since it uses less digits than its factorization.

11055431504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5165 (or 5140 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 11055431504 its reverse (40513455011), we get a palindrome (51568886515).

The spelling of 11055431504 in words is "eleven billion, fifty-five million, four hundred thirty-one thousand, five hundred four".