2576778560 has 28 divisors (see below), whose sum is σ = 6135954708. Its totient is φ = 1030711296.

The previous prime is 2576778551. The next prime is 2576778577. The reversal of 2576778560 is 658776752.

It can be written as a sum of positive squares in 2 ways, for example, as 1559934016 + 1016844544 = 39496^2 + 31888^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4025897 + ... + 4026536.

Almost surely, 2^2576778560 is an apocalyptic number.

2576778560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2576778560 is an abundant number, since it is smaller than the sum of its proper divisors (3559176148).

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

2576778560 is an equidigital number, since it uses as much as digits as its factorization.

2576778560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8052450 (or 8052440 counting only the distinct ones).

The product of its (nonzero) digits is 4939200, while the sum is 53.

The square root of 2576778560 is about 50761.9794728299. The cubic root of 2576778560 is about 1370.9628906683.

The spelling of 2576778560 in words is "two billion, five hundred seventy-six million, seven hundred seventy-eight thousand, five hundred sixty".