2564869192247 has 2 divisors, whose sum is σ = 2564869192248. Its totient is φ = 2564869192246.

The previous prime is 2564869192243. The next prime is 2564869192267. The reversal of 2564869192247 is 7422919684652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2564869192247 - 2² = 2564869192243 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2564869192243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282434596123 + 1282434596124.

It is an arithmetic number, because the mean of its divisors is an integer number (1282434596124).

Almost surely, 2^{2564869192247} is an apocalyptic number.

2564869192247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564869192247 is an equidigital number, since it uses as much as digits as its factorization.

2564869192247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104509440, while the sum is 65.

The spelling of 2564869192247 in words is "two trillion, five hundred sixty-four billion, eight hundred sixty-nine million, one hundred ninety-two thousand, two hundred forty-seven".