11606664520 has 64 divisors (see below), whose sum is σ = 29988532800. Its totient is φ = 3998465280.

The previous prime is 11606664467. The next prime is 11606664527. The reversal of 11606664520 is 2546660611.

It is a super-2 number, since 2×11606664520² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11606664520.

It is not an unprimeable number, because it can be changed into a prime (11606664527) 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, 685819 + ... + 702538.

It is an arithmetic number, because the mean of its divisors is an integer number (468570825).

Almost surely, 2^11606664520 is an apocalyptic number.

11606664520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11606664520 is an abundant number, since it is smaller than the sum of its proper divisors (18381868280).

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

11606664520 is a wasteful number, since it uses less digits than its factorization.

11606664520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388398 (or 1388394 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 11606664520 in words is "eleven billion, six hundred six million, six hundred sixty-four thousand, five hundred twenty".