6568781316 has 12 divisors (see below), whose sum is σ = 15327156432. Its totient is φ = 2189593768.

The previous prime is 6568781311. The next prime is 6568781321. The reversal of 6568781316 is 6131878656.

It is an interprime number because it is at equal distance from previous prime (6568781311) and next prime (6568781321).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (6568781311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273699210 + ... + 273699233.

It is an arithmetic number, because the mean of its divisors is an integer number (1277263036).

Almost surely, 2^6568781316 is an apocalyptic number.

It is an amenable number.

6568781316 is an abundant number, since it is smaller than the sum of its proper divisors (8758375116).

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

6568781316 is a wasteful number, since it uses less digits than its factorization.

6568781316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547398450 (or 547398448 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The square root of 6568781316 is about 81048.0185815792. The cubic root of 6568781316 is about 1872.8152393287.

The spelling of 6568781316 in words is "six billion, five hundred sixty-eight million, seven hundred eighty-one thousand, three hundred sixteen".