11636005680 has 240 divisors, whose sum is σ = 43222233600. Its totient is φ = 2786752512.

The previous prime is 11636005673. The next prime is 11636005723. The reversal of 11636005680 is 8650063611.

It is a happy number.

11636005680 is a `hidden beast` number, since 11 + 636 + 0 + 0 + 5 + 6 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

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 47 ways as a sum of consecutive naturals, for example, 329521 + ... + 363119.

It is an arithmetic number, because the mean of its divisors is an integer number (180092640).

Almost surely, 2^11636005680 is an apocalyptic number.

11636005680 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 11636005680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21611116800).

11636005680 is an abundant number, since it is smaller than the sum of its proper divisors (31586227920).

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

11636005680 is a wasteful number, since it uses less digits than its factorization.

11636005680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33668 (or 33659 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 11636005680 in words is "eleven billion, six hundred thirty-six million, five thousand, six hundred eighty".