1316685220928 has 224 divisors, whose sum is σ = 3322978172928. Its totient is φ = 502708377600.

The previous prime is 1316685220897. The next prime is 1316685220933. The reversal of 1316685220928 is 8290225866131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a self number, because there is not a number n which added to its sum of digits gives 1316685220928.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 258830801 + ... + 258835887.

Almost surely, 2^{1316685220928} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1316685220928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1661489086464).

1316685220928 is an abundant number, since it is smaller than the sum of its proper divisors (2006292952000).

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

1316685220928 is a wasteful number, since it uses less digits than its factorization.

1316685220928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6161 (or 6151 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 1316685220928 in words is "one trillion, three hundred sixteen billion, six hundred eighty-five million, two hundred twenty thousand, nine hundred twenty-eight".