11818463436 has 336 divisors, whose sum is σ = 35167668480. Its totient is φ = 3448811520.

The previous prime is 11818463417. The next prime is 11818463513. The reversal of 11818463436 is 63436481811.

11818463436 is a `hidden beast` number, since 1 + 1 + 8 + 1 + 8 + 4 + 634 + 3 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 11818463391 and 11818463400.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 104588116 + ... + 104588228.

It is an arithmetic number, because the mean of its divisors is an integer number (104665680).

Almost surely, 2^11818463436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11818463436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17583834240).

11818463436 is an abundant number, since it is smaller than the sum of its proper divisors (23349205044).

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

11818463436 is a wasteful number, since it uses less digits than its factorization.

11818463436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 251 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The spelling of 11818463436 in words is "eleven billion, eight hundred eighteen million, four hundred sixty-three thousand, four hundred thirty-six".