2778332775 has 48 divisors (see below), whose sum is σ = 4739009184. Its totient is φ = 1435207680.

The previous prime is 2778332773. The next prime is 2778332783. The reversal of 2778332775 is 5772338772.

It is not a de Polignac number, because 2778332775 - 2¹ = 2778332773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778332773) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 644427 + ... + 648723.

It is an arithmetic number, because the mean of its divisors is an integer number (98729358).

Almost surely, 2^2778332775 is an apocalyptic number.

2778332775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2778332775 is a deficient number, since it is larger than the sum of its proper divisors (1960676409).

2778332775 is a wasteful number, since it uses less digits than its factorization.

2778332775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4580 (or 4575 counting only the distinct ones).

The product of its digits is 3457440, while the sum is 51.

The square root of 2778332775 is about 52709.8925724574. The cubic root of 2778332775 is about 1405.8147231591.

The spelling of 2778332775 in words is "two billion, seven hundred seventy-eight million, three hundred thirty-two thousand, seven hundred seventy-five".