11573587640 has 64 divisors (see below), whose sum is σ = 26262351360. Its totient is φ = 4590152320.

The previous prime is 11573587637. The next prime is 11573587673. The reversal of 11573587640 is 4678537511.

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, 2957285 + ... + 2961195.

It is an arithmetic number, because the mean of its divisors is an integer number (410349240).

Almost surely, 2^11573587640 is an apocalyptic number.

11573587640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11573587640 is an abundant number, since it is smaller than the sum of its proper divisors (14688763720).

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

11573587640 is a wasteful number, since it uses less digits than its factorization.

11573587640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4532 (or 4528 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 47.

The spelling of 11573587640 in words is "eleven billion, five hundred seventy-three million, five hundred eighty-seven thousand, six hundred forty".