11142440552 has 16 divisors (see below), whose sum is σ = 21612492900. Its totient is φ = 5379109120.

The previous prime is 11142440549. The next prime is 11142440587. The reversal of 11142440552 is 25504424111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10581413956 + 561026596 = 102866^2 + 23686^2 .

It is a super-4 number, since 4×11142440552⁴ (a number of 41 digits) contains 4444 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24013649 + ... + 24014112.

Almost surely, 2^11142440552 is an apocalyptic number.

It is an amenable number.

11142440552 is a deficient number, since it is larger than the sum of its proper divisors (10470052348).

11142440552 is a wasteful number, since it uses less digits than its factorization.

11142440552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48027796 (or 48027792 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 11142440552 its reverse (25504424111), we get a palindrome (36646864663).

The spelling of 11142440552 in words is "eleven billion, one hundred forty-two million, four hundred forty thousand, five hundred fifty-two".