11660545520 has 80 divisors (see below), whose sum is σ = 30465675072. Its totient is φ = 4118231040.

The previous prime is 11660545493. The next prime is 11660545579. The reversal of 11660545520 is 2554506611.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219821 + ... + 267660.

Almost surely, 2^11660545520 is an apocalyptic number.

11660545520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11660545520 is an abundant number, since it is smaller than the sum of its proper divisors (18805129552).

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

11660545520 is a wasteful number, since it uses less digits than its factorization.

11660545520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487530 (or 487524 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 11660545520 in words is "eleven billion, six hundred sixty million, five hundred forty-five thousand, five hundred twenty".