11728389464 has 128 divisors (see below), whose sum is σ = 26442547200. Its totient is φ = 4817232000.

The previous prime is 11728389443. The next prime is 11728389479. The reversal of 11728389464 is 46498382711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3678479 + ... + 3681665.

It is an arithmetic number, because the mean of its divisors is an integer number (206582400).

Almost surely, 2^11728389464 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 11728389464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13221273600).

11728389464 is an abundant number, since it is smaller than the sum of its proper divisors (14714157736).

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

11728389464 is a wasteful number, since it uses less digits than its factorization.

11728389464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3325 (or 3321 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 53.

The spelling of 11728389464 in words is "eleven billion, seven hundred twenty-eight million, three hundred eighty-nine thousand, four hundred sixty-four".