2568586778 has 32 divisors (see below), whose sum is σ = 4251405312. Its totient is φ = 1159804800.

The previous prime is 2568586777. The next prime is 2568586781. The reversal of 2568586778 is 8776858652.

It is a super-2 number, since 2×2568586778² = 13195276072232842568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a self number, because there is not a number n which added to its sum of digits gives 2568586778.

It is not an unprimeable number, because it can be changed into a prime (2568586777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36500 + ... + 80432.

It is an arithmetic number, because the mean of its divisors is an integer number (132856416).

Almost surely, 2^2568586778 is an apocalyptic number.

2568586778 is a deficient number, since it is larger than the sum of its proper divisors (1682818534).

2568586778 is a wasteful number, since it uses less digits than its factorization.

2568586778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44030.

The product of its digits is 45158400, while the sum is 62.

The square root of 2568586778 is about 50681.2270766997. The cubic root of 2568586778 is about 1369.5085487513.

The spelling of 2568586778 in words is "two billion, five hundred sixty-eight million, five hundred eighty-six thousand, seven hundred seventy-eight".