11111689744 has 75 divisors (see below), whose sum is σ = 23040504573. Its totient is φ = 5191330176.

The previous prime is 11111689739. The next prime is 11111689747. The reversal of 11111689744 is 44798611111.

The square root of 11111689744 is 105412.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 6307536400 + 4804153344 = 79420^2 + 69312^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11111689744.

It is not an unprimeable number, because it can be changed into a prime (11111689747) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 152214892 + ... + 152214964.

Almost surely, 2^11111689744 is an apocalyptic number.

11111689744 is the 105412-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11111689744

11111689744 is an abundant number, since it is smaller than the sum of its proper divisors (11928814829).

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

11111689744 is an frugal number, since it uses more digits than its factorization.

11111689744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 94 counting only the distinct ones).

The product of its digits is 48384, while the sum is 43.

The spelling of 11111689744 in words is "eleven billion, one hundred eleven million, six hundred eighty-nine thousand, seven hundred forty-four".