11778320664798 has 8 divisors (see below), whose sum is σ = 23556641329608. Its totient is φ = 3926106888264.

The previous prime is 11778320664791. The next prime is 11778320664821. The reversal of 11778320664798 is 89746602387711.

It is a sphenic number, since it is the product of 3 distinct primes.

11778320664798 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11778320664791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 981526722061 + ... + 981526722072.

It is an arithmetic number, because the mean of its divisors is an integer number (2944580166201).

Almost surely, 2^{11778320664798} is an apocalyptic number.

11778320664798 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11778320664798 is a wasteful number, since it uses less digits than its factorization.

11778320664798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963053444138.

The product of its (nonzero) digits is 170698752, while the sum is 69.

The spelling of 11778320664798 in words is "eleven trillion, seven hundred seventy-eight billion, three hundred twenty million, six hundred sixty-four thousand, seven hundred ninety-eight".