2778573427 has 16 divisors (see below), whose sum is σ = 3232023552. Its totient is φ = 2339497440.

The previous prime is 2778573383. The next prime is 2778573451. The reversal of 2778573427 is 7243758772.

It is not a de Polignac number, because 2778573427 - 2¹⁵ = 2778540659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2778574427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127578 + ... + 147760.

It is an arithmetic number, because the mean of its divisors is an integer number (202001472).

Almost surely, 2^2778573427 is an apocalyptic number.

2778573427 is a deficient number, since it is larger than the sum of its proper divisors (453450125).

2778573427 is a wasteful number, since it uses less digits than its factorization.

2778573427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20538.

The product of its digits is 4609920, while the sum is 52.

The square root of 2778573427 is about 52712.1753203185. The cubic root of 2778573427 is about 1405.8553113325.

The spelling of 2778573427 in words is "two billion, seven hundred seventy-eight million, five hundred seventy-three thousand, four hundred twenty-seven".