11391636960 has 1152 divisors, whose sum is σ = 48906547200. Its totient is φ = 2463436800.

The previous prime is 11391636959. The next prime is 11391636989. The reversal of 11391636960 is 6963619311.

It is a happy number.

11391636960 is a `hidden beast` number, since 1 + 1 + 3 + 9 + 1 + 636 + 9 + 6 + 0 = 666.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 307882062 + ... + 307882098.

It is an arithmetic number, because the mean of its divisors is an integer number (42453600).

Almost surely, 2^11391636960 is an apocalyptic number.

11391636960 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 11391636960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24453273600).

11391636960 is an abundant number, since it is smaller than the sum of its proper divisors (37514910240).

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

11391636960 is a wasteful number, since it uses less digits than its factorization.

11391636960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The spelling of 11391636960 in words is "eleven billion, three hundred ninety-one million, six hundred thirty-six thousand, nine hundred sixty".