11531042160 has 80 divisors (see below), whose sum is σ = 38995896960. Its totient is φ = 2795403520.

The previous prime is 11531042137. The next prime is 11531042189. The reversal of 11531042160 is 6124013511.

It is a happy number.

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

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 11531042160.

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, 2181270 + ... + 2186549.

It is an arithmetic number, because the mean of its divisors is an integer number (487448712).

Almost surely, 2^11531042160 is an apocalyptic number.

11531042160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11531042160 is an abundant number, since it is smaller than the sum of its proper divisors (27464854800).

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

11531042160 is a wasteful number, since it uses less digits than its factorization.

11531042160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4367846 (or 4367840 counting only the distinct ones).

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

Adding to 11531042160 its reverse (6124013511), we get a palindrome (17655055671).

The spelling of 11531042160 in words is "eleven billion, five hundred thirty-one million, forty-two thousand, one hundred sixty".