11142005520 has 80 divisors (see below), whose sum is σ = 34671745152. Its totient is φ = 2959887360.

The previous prime is 11142005503. The next prime is 11142005531. The reversal of 11142005520 is 2550024111.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25141 + ... + 151380.

Almost surely, 2^11142005520 is an apocalyptic number.

11142005520 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 11142005520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17335872576).

11142005520 is an abundant number, since it is smaller than the sum of its proper divisors (23529739632).

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

11142005520 is a wasteful number, since it uses less digits than its factorization.

11142005520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176800 (or 176794 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 11142005520 its reverse (2550024111), we get a palindrome (13692029631).

The spelling of 11142005520 in words is "eleven billion, one hundred forty-two million, five thousand, five hundred twenty".