11643264448 has 56 divisors (see below), whose sum is σ = 24339448400. Its totient is φ = 5510965248.

The previous prime is 11643264439. The next prime is 11643264449. The reversal of 11643264448 is 84446234611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11643264449) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2026636 + ... + 2032372.

Almost surely, 2^11643264448 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 11643264448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12169724200).

11643264448 is an abundant number, since it is smaller than the sum of its proper divisors (12696183952).

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

11643264448 is a wasteful number, since it uses less digits than its factorization.

11643264448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7437 (or 7427 counting only the distinct ones).

The product of its digits is 442368, while the sum is 43.

The spelling of 11643264448 in words is "eleven billion, six hundred forty-three million, two hundred sixty-four thousand, four hundred forty-eight".