11530521241 has 16 divisors (see below), whose sum is σ = 12302559360. Its totient is φ = 10775738880.

The previous prime is 11530521227. The next prime is 11530521259. The reversal of 11530521241 is 14212503511.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11530521241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11530521221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 563115 + ... + 583231.

It is an arithmetic number, because the mean of its divisors is an integer number (768909960).

Almost surely, 2^11530521241 is an apocalyptic number.

It is an amenable number.

11530521241 is a deficient number, since it is larger than the sum of its proper divisors (772038119).

11530521241 is a wasteful number, since it uses less digits than its factorization.

11530521241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20544.

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 11530521241 in words is "eleven billion, five hundred thirty million, five hundred twenty-one thousand, two hundred forty-one".