11530657140 has 96 divisors (see below), whose sum is σ = 33472365696. Its totient is φ = 2963650560.

The previous prime is 11530657139. The next prime is 11530657207. The reversal of 11530657140 is 4175603511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175944 + ... + 232416.

It is an arithmetic number, because the mean of its divisors is an integer number (348670476).

Almost surely, 2^11530657140 is an apocalyptic number.

11530657140 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 11530657140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16736182848).

11530657140 is an abundant number, since it is smaller than the sum of its proper divisors (21941708556).

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

11530657140 is a wasteful number, since it uses less digits than its factorization.

11530657140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56609 (or 56607 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 33.

The spelling of 11530657140 in words is "eleven billion, five hundred thirty million, six hundred fifty-seven thousand, one hundred forty".