11321532544 has 32 divisors (see below), whose sum is σ = 25776705600. Its totient is φ = 4852084992.

The previous prime is 11321532503. The next prime is 11321532557. The reversal of 11321532544 is 44523512311.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×11321532544² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6316924 + ... + 6318715.

It is an arithmetic number, because the mean of its divisors is an integer number (805522050).

Almost surely, 2^11321532544 is an apocalyptic number.

11321532544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11321532544 is an abundant number, since it is smaller than the sum of its proper divisors (14455173056).

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

11321532544 is an equidigital number, since it uses as much as digits as its factorization.

11321532544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12635660 (or 12635648 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The spelling of 11321532544 in words is "eleven billion, three hundred twenty-one million, five hundred thirty-two thousand, five hundred forty-four".