11665543230 has 48 divisors (see below), whose sum is σ = 33087725424. Its totient is φ = 2828010240.

The previous prime is 11665543171. The next prime is 11665543231. The reversal of 11665543230 is 3234556611.

11665543230 is a `hidden beast` number, since 11 + 66 + 554 + 3 + 2 + 30 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11665543231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5890699 + ... + 5892678.

It is an arithmetic number, because the mean of its divisors is an integer number (689327613).

Almost surely, 2^11665543230 is an apocalyptic number.

11665543230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11665543230 is an abundant number, since it is smaller than the sum of its proper divisors (21422182194).

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

11665543230 is a wasteful number, since it uses less digits than its factorization.

11665543230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11783401 (or 11783398 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 11665543230 in words is "eleven billion, six hundred sixty-five million, five hundred forty-three thousand, two hundred thirty".