11636381472 has 96 divisors (see below), whose sum is σ = 31440487680. Its totient is φ = 3766763520.

The previous prime is 11636381441. The next prime is 11636381501. The reversal of 11636381472 is 27418363611.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 450048 + ... + 475200.

It is an arithmetic number, because the mean of its divisors is an integer number (327505080).

Almost surely, 2^11636381472 is an apocalyptic number.

11636381472 is a gapful number since it is divisible by the number (12) 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 11636381472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15720243840).

11636381472 is an abundant number, since it is smaller than the sum of its proper divisors (19804106208).

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

11636381472 is a wasteful number, since it uses less digits than its factorization.

11636381472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25306 (or 25298 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The spelling of 11636381472 in words is "eleven billion, six hundred thirty-six million, three hundred eighty-one thousand, four hundred seventy-two".