11816386560 has 720 divisors, whose sum is σ = 47108984832. Its totient is φ = 2713190400.

The previous prime is 11816386559. The next prime is 11816386619. The reversal of 11816386560 is 6568361811.

11816386560 is a `hidden beast` number, since 1 + 1 + 8 + 1 + 6 + 3 + 86 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 251412457 + ... + 251412503.

Almost surely, 2^11816386560 is an apocalyptic number.

11816386560 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 11816386560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23554492416).

11816386560 is an abundant number, since it is smaller than the sum of its proper divisors (35292598272).

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

11816386560 is a wasteful number, since it uses less digits than its factorization.

11816386560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 11816386560 in words is "eleven billion, eight hundred sixteen million, three hundred eighty-six thousand, five hundred sixty".