2778265959 has 16 divisors (see below), whose sum is σ = 4234572288. Its totient is φ = 1587196512.

The previous prime is 2778265913. The next prime is 2778265961. The reversal of 2778265959 is 9595628772.

It is not a de Polignac number, because 2778265959 - 2¹⁵ = 2778233191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778265909) 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, 88854 + ... + 115980.

It is an arithmetic number, because the mean of its divisors is an integer number (264660768).

Almost surely, 2^2778265959 is an apocalyptic number.

2778265959 is a deficient number, since it is larger than the sum of its proper divisors (1456306329).

2778265959 is a wasteful number, since it uses less digits than its factorization.

2778265959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32014.

The product of its digits is 19051200, while the sum is 60.

The square root of 2778265959 is about 52709.2587597284. The cubic root of 2778265959 is about 1405.8034536104.

The spelling of 2778265959 in words is "two billion, seven hundred seventy-eight million, two hundred sixty-five thousand, nine hundred fifty-nine".