11621446272 has 128 divisors (see below), whose sum is σ = 34685712000. Its totient is φ = 3830188032.

The previous prime is 11621446237. The next prime is 11621446289. The reversal of 11621446272 is 27264412611.

11621446272 is a `hidden beast` number, since 1 + 1 + 6 + 21 + 4 + 4 + 627 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288693 + ... + 326475.

It is an arithmetic number, because the mean of its divisors is an integer number (270982125).

Almost surely, 2^11621446272 is an apocalyptic number.

11621446272 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 11621446272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17342856000).

11621446272 is an abundant number, since it is smaller than the sum of its proper divisors (23064265728).

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

11621446272 is an equidigital number, since it uses as much as digits as its factorization.

11621446272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37895 (or 37877 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

Adding to 11621446272 its reverse (27264412611), we get a palindrome (38885858883).

The spelling of 11621446272 in words is "eleven billion, six hundred twenty-one million, four hundred forty-six thousand, two hundred seventy-two".