2783138807806 has 64 divisors (see below), whose sum is σ = 5283624038400. Its totient is φ = 1071309127680.

The previous prime is 2783138807767. The next prime is 2783138807809. The reversal of 2783138807806 is 6087088313872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2783138807809) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1769470 + ... + 2949118.

It is an arithmetic number, because the mean of its divisors is an integer number (82556625600).

Almost surely, 2^{2783138807806} is an apocalyptic number.

2783138807806 is a deficient number, since it is larger than the sum of its proper divisors (2500485230594).

2783138807806 is a wasteful number, since it uses less digits than its factorization.

2783138807806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180129.

The product of its (nonzero) digits is 21676032, while the sum is 61.

The spelling of 2783138807806 in words is "two trillion, seven hundred eighty-three billion, one hundred thirty-eight million, eight hundred seven thousand, eight hundred six".