2781703928313 has 8 divisors (see below), whose sum is σ = 4121042856800. Its totient is φ = 1854469285524.

The previous prime is 2781703928243. The next prime is 2781703928387. The reversal of 2781703928313 is 3138293071872.

2781703928313 is a `hidden beast` number, since 2 + 7 + 8 + 170 + 392 + 83 + 1 + 3 = 666.

It is not a de Polignac number, because 2781703928313 - 2⁹ = 2781703927801 is a prime.

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 2781703928313.

It is not an unprimeable number, because it can be changed into a prime (2781703928413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51513035683 + ... + 51513035736.

It is an arithmetic number, because the mean of its divisors is an integer number (515130357100).

Almost surely, 2^{2781703928313} is an apocalyptic number.

It is an amenable number.

2781703928313 is a deficient number, since it is larger than the sum of its proper divisors (1339338928487).

2781703928313 is a wasteful number, since it uses less digits than its factorization.

2781703928313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103026071428 (or 103026071422 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 2781703928313 in words is "two trillion, seven hundred eighty-one billion, seven hundred three million, nine hundred twenty-eight thousand, three hundred thirteen".