2564620105087 has 2 divisors, whose sum is σ = 2564620105088. Its totient is φ = 2564620105086.

The previous prime is 2564620105037. The next prime is 2564620105097. The reversal of 2564620105087 is 7805010264652.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2564620105087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2564620105037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282310052543 + 1282310052544.

It is an arithmetic number, because the mean of its divisors is an integer number (1282310052544).

Almost surely, 2^{2564620105087} is an apocalyptic number.

2564620105087 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564620105087 is an equidigital number, since it uses as much as digits as its factorization.

2564620105087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 806400, while the sum is 46.

The spelling of 2564620105087 in words is "two trillion, five hundred sixty-four billion, six hundred twenty million, one hundred five thousand, eighty-seven".