11663633736 has 24 divisors (see below), whose sum is σ = 31589008230. Its totient is φ = 3887877888.

The previous prime is 11663633699. The next prime is 11663633747. The reversal of 11663633736 is 63733636611.

11663633736 is a `hidden beast` number, since 1 + 1 + 6 + 6 + 3 + 633 + 7 + 3 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6392002500 + 5271631236 = 79950^2 + 72606^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 11663633691 and 11663633700.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80997385 + ... + 80997528.

Almost surely, 2^11663633736 is an apocalyptic number.

It is an amenable number.

11663633736 is an abundant number, since it is smaller than the sum of its proper divisors (19925374494).

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

11663633736 is a wasteful number, since it uses less digits than its factorization.

11663633736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161994925 (or 161994918 counting only the distinct ones).

The product of its digits is 734832, while the sum is 45.

The spelling of 11663633736 in words is "eleven billion, six hundred sixty-three million, six hundred thirty-three thousand, seven hundred thirty-six".