11556464635536 has 160 divisors (see below), whose sum is σ = 30937330169856. Its totient is φ = 3715158720000.

The previous prime is 11556464635493. The next prime is 11556464635543. The reversal of 11556464635536 is 63553646465511.

It is a self number, because there is not a number n which added to its sum of digits gives 11556464635536.

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 31 ways as a sum of consecutive naturals, for example, 47957431 + ... + 48197801.

Almost surely, 2^{11556464635536} is an apocalyptic number.

11556464635536 is a gapful number since it is divisible by the number (16) 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 11556464635536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15468665084928).

11556464635536 is an abundant number, since it is smaller than the sum of its proper divisors (19380865534320).

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

11556464635536 is a wasteful number, since it uses less digits than its factorization.

11556464635536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240741 (or 240735 counting only the distinct ones).

The product of its digits is 116640000, while the sum is 60.

The spelling of 11556464635536 in words is "eleven trillion, five hundred fifty-six billion, four hundred sixty-four million, six hundred thirty-five thousand, five hundred thirty-six".