11663610576 has 80 divisors (see below), whose sum is σ = 30486840384. Its totient is φ = 3842076672.

The previous prime is 11663610557. The next prime is 11663610577. The reversal of 11663610576 is 67501636611.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11663610577) 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, 4109830 + ... + 4112666.

Almost surely, 2^11663610576 is an apocalyptic number.

11663610576 is a gapful number since it is divisible by the number (16) 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 11663610576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15243420192).

11663610576 is an abundant number, since it is smaller than the sum of its proper divisors (18823229808).

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

11663610576 is a wasteful number, since it uses less digits than its factorization.

11663610576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3828 (or 3822 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 11663610576 in words is "eleven billion, six hundred sixty-three million, six hundred ten thousand, five hundred seventy-six".