11131052640 has 96 divisors (see below), whose sum is σ = 35424436320. Its totient is φ = 2937667584.

The previous prime is 11131052609. The next prime is 11131052659. The reversal of 11131052640 is 4625013111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 11131052640.

It is a congruent number.

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, 72975 + ... + 166094.

It is an arithmetic number, because the mean of its divisors is an integer number (369004545).

Almost surely, 2^11131052640 is an apocalyptic number.

11131052640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11131052640 is an abundant number, since it is smaller than the sum of its proper divisors (24293383680).

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

11131052640 is a wasteful number, since it uses less digits than its factorization.

11131052640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239184 (or 239176 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 11131052640 its reverse (4625013111), we get a palindrome (15756065751).

The spelling of 11131052640 in words is "eleven billion, one hundred thirty-one million, fifty-two thousand, six hundred forty".