2781792219817 has 12 divisors (see below), whose sum is σ = 3019425731280. Its totient is φ = 2561679717168.

The previous prime is 2781792219793. The next prime is 2781792219859. The reversal of 2781792219817 is 7189122971872.

It is not a de Polignac number, because 2781792219817 - 2¹⁵ = 2781792187049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2781792213817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19571563 + ... + 19713184.

It is an arithmetic number, because the mean of its divisors is an integer number (251618810940).

Almost surely, 2^{2781792219817} is an apocalyptic number.

It is an amenable number.

2781792219817 is a deficient number, since it is larger than the sum of its proper divisors (237633511463).

2781792219817 is a wasteful number, since it uses less digits than its factorization.

2781792219817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39285192 (or 39285179 counting only the distinct ones).

The product of its digits is 14224896, while the sum is 64.

The spelling of 2781792219817 in words is "two trillion, seven hundred eighty-one billion, seven hundred ninety-two million, two hundred nineteen thousand, eight hundred seventeen".