2778130275 has 24 divisors (see below), whose sum is σ = 4705209264. Its totient is φ = 1445529600.

The previous prime is 2778130273. The next prime is 2778130291. The reversal of 2778130275 is 5720318772.

It is not a de Polignac number, because 2778130275 - 2¹ = 2778130273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2778130273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 448654 + ... + 454803.

It is an arithmetic number, because the mean of its divisors is an integer number (196050386).

Almost surely, 2^2778130275 is an apocalyptic number.

2778130275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2778130275 is a deficient number, since it is larger than the sum of its proper divisors (1927078989).

2778130275 is a wasteful number, since it uses less digits than its factorization.

2778130275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903511 (or 903506 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 42.

The square root of 2778130275 is about 52707.9716456629. The cubic root of 2778130275 is about 1405.7805678556.

The spelling of 2778130275 in words is "two billion, seven hundred seventy-eight million, one hundred thirty thousand, two hundred seventy-five".