2564281561063 has 2 divisors, whose sum is σ = 2564281561064. Its totient is φ = 2564281561062.

The previous prime is 2564281561007. The next prime is 2564281561091. The reversal of 2564281561063 is 3601651824652.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2564281561063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2564281560998 and 2564281561016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2564281567063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282140780531 + 1282140780532.

It is an arithmetic number, because the mean of its divisors is an integer number (1282140780532).

Almost surely, 2^{2564281561063} is an apocalyptic number.

2564281561063 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564281561063 is an equidigital number, since it uses as much as digits as its factorization.

2564281561063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2073600, while the sum is 49.

The spelling of 2564281561063 in words is "two trillion, five hundred sixty-four billion, two hundred eighty-one million, five hundred sixty-one thousand, sixty-three".