2805783032780 has 96 divisors (see below), whose sum is σ = 7399867574400. Its totient is φ = 887984052480.

The previous prime is 2805783032683. The next prime is 2805783032831. The reversal of 2805783032780 is 872303875082.

It is a super-2 number, since 2×2805783032780² (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15641831 + ... + 15820190.

It is an arithmetic number, because the mean of its divisors is an integer number (77081953900).

Almost surely, 2^{2805783032780} is an apocalyptic number.

2805783032780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2805783032780 is an abundant number, since it is smaller than the sum of its proper divisors (4594084541620).

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

2805783032780 is a wasteful number, since it uses less digits than its factorization.

2805783032780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31462064 (or 31462048 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 53.

The spelling of 2805783032780 in words is "two trillion, eight hundred five billion, seven hundred eighty-three million, thirty-two thousand, seven hundred eighty".