11961784448 has 16 divisors (see below), whose sum is σ = 23830117710. Its totient is φ = 5980892160.

The previous prime is 11961784423. The next prime is 11961784451. The reversal of 11961784448 is 84448716911.

It can be written as a sum of positive squares in only one way, i.e., 11874025024 + 87759424 = 108968^2 + 9368^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 11961784448.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46725593 + ... + 46725848.

Almost surely, 2^11961784448 is an apocalyptic number.

It is an amenable number.

11961784448 is a deficient number, since it is larger than the sum of its proper divisors (11868333262).

11961784448 is an frugal number, since it uses more digits than its factorization.

11961784448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93451455 (or 93451443 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 53.

The spelling of 11961784448 in words is "eleven billion, nine hundred sixty-one million, seven hundred eighty-four thousand, four hundred forty-eight".