11052431440 has 20 divisors (see below), whose sum is σ = 25696903284. Its totient is φ = 4420972544.

The previous prime is 11052431419. The next prime is 11052431449. The reversal of 11052431440 is 4413425011.

It can be written as a sum of positive squares in 2 ways, for example, as 3666060304 + 7386371136 = 60548^2 + 85944^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11052431449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69077617 + ... + 69077776.

Almost surely, 2^11052431440 is an apocalyptic number.

11052431440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11052431440 is an abundant number, since it is smaller than the sum of its proper divisors (14644471844).

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

11052431440 is a wasteful number, since it uses less digits than its factorization.

11052431440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138155406 (or 138155400 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 11052431440 its reverse (4413425011), we get a palindrome (15465856451).

The spelling of 11052431440 in words is "eleven billion, fifty-two million, four hundred thirty-one thousand, four hundred forty".