11500113666 has 16 divisors (see below), whose sum is σ = 24000237504. Its totient is φ = 3666702864.

The previous prime is 11500113649. The next prime is 11500113683. The reversal of 11500113666 is 66631100511.

It is an interprime number because it is at equal distance from previous prime (11500113649) and next prime (11500113683).

It is a super-2 number, since 2×11500113666² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41666941 + ... + 41667216.

It is an arithmetic number, because the mean of its divisors is an integer number (1500014844).

Almost surely, 2^11500113666 is an apocalyptic number.

11500113666 is an abundant number, since it is smaller than the sum of its proper divisors (12500123838).

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

11500113666 is a wasteful number, since it uses less digits than its factorization.

11500113666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83334185.

The product of its (nonzero) digits is 3240, while the sum is 30.

The spelling of 11500113666 in words is "eleven billion, five hundred million, one hundred thirteen thousand, six hundred sixty-six".