11844647728 has 40 divisors (see below), whose sum is σ = 25577849520. Its totient is φ = 5280583680.

The previous prime is 11844647723. The next prime is 11844647743. The reversal of 11844647728 is 82774644811.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (11844647723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1140793 + ... + 1151128.

It is an arithmetic number, because the mean of its divisors is an integer number (639446238).

Almost surely, 2^11844647728 is an apocalyptic number.

It is an amenable number.

11844647728 is an abundant number, since it is smaller than the sum of its proper divisors (13733201792).

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

11844647728 is a wasteful number, since it uses less digits than its factorization.

11844647728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291965 (or 2291959 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 52.

The spelling of 11844647728 in words is "eleven billion, eight hundred forty-four million, six hundred forty-seven thousand, seven hundred twenty-eight".