11778844337766 has 96 divisors (see below), whose sum is σ = 28455315033600. Its totient is φ = 3491427816000.

The previous prime is 11778844337723. The next prime is 11778844337861. The reversal of 11778844337766 is 66773344887711.

11778844337766 is a `hidden beast` number, since 1 + 1 + 7 + 7 + 88 + 443 + 37 + 76 + 6 = 666.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 11778844337694 and 11778844337703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1888366 + ... + 5208033.

It is an arithmetic number, because the mean of its divisors is an integer number (296409531600).

Almost surely, 2^{11778844337766} is an apocalyptic number.

11778844337766 is an abundant number, since it is smaller than the sum of its proper divisors (16676470695834).

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

11778844337766 is a wasteful number, since it uses less digits than its factorization.

11778844337766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7096602 (or 7096599 counting only the distinct ones).

The product of its digits is 796594176, while the sum is 72.

Subtracting 11778844337766 from its reverse (66773344887711), we obtain a palindrome (54994500549945).

The spelling of 11778844337766 in words is "eleven trillion, seven hundred seventy-eight billion, eight hundred forty-four million, three hundred thirty-seven thousand, seven hundred sixty-six".