11660267520 has 728 divisors, whose sum is σ = 46411123392. Its totient is φ = 2786918400.

The previous prime is 11660267503. The next prime is 11660267537. The reversal of 11660267520 is 2576206611.

It is a happy number.

11660267520 is a `hidden beast` number, since 1 + 16 + 60 + 2 + 67 + 520 = 666.

It is an interprime number because it is at equal distance from previous prime (11660267503) and next prime (11660267537).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 164229085 + ... + 164229155.

Almost surely, 2^11660267520 is an apocalyptic number.

11660267520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11660267520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23205561696).

11660267520 is an abundant number, since it is smaller than the sum of its proper divisors (34750855872).

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

11660267520 is an frugal number, since it uses more digits than its factorization.

11660267520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 11660267520 in words is "eleven billion, six hundred sixty million, two hundred sixty-seven thousand, five hundred twenty".