11515006660 has 24 divisors (see below), whose sum is σ = 24472861056. Its totient is φ = 4550508000.

The previous prime is 11515006651. The next prime is 11515006669. The reversal of 11515006660 is 6660051511.

It is an interprime number because it is at equal distance from previous prime (11515006651) and next prime (11515006669).

It is not an unprimeable number, because it can be changed into a prime (11515006669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3466716 + ... + 3470035.

It is an arithmetic number, because the mean of its divisors is an integer number (1019702544).

Almost surely, 2^11515006660 is an apocalyptic number.

11515006660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11515006660 is an abundant number, since it is smaller than the sum of its proper divisors (12957854396).

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

11515006660 is a wasteful number, since it uses less digits than its factorization.

11515006660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6936843 (or 6936841 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 11515006660 in words is "eleven billion, five hundred fifteen million, six thousand, six hundred sixty".