11478364664 has 96 divisors (see below), whose sum is σ = 25125700320. Its totient is φ = 4882643712.

The previous prime is 11478364663. The next prime is 11478364687. The reversal of 11478364664 is 46646387411.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11478364663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1384997 + ... + 1393259.

It is an arithmetic number, because the mean of its divisors is an integer number (261726045).

Almost surely, 2^11478364664 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 11478364664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12562850160).

11478364664 is an abundant number, since it is smaller than the sum of its proper divisors (13647335656).

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

11478364664 is a wasteful number, since it uses less digits than its factorization.

11478364664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8357 (or 8334 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 50.

The spelling of 11478364664 in words is "eleven billion, four hundred seventy-eight million, three hundred sixty-four thousand, six hundred sixty-four".