2605857860863 has 2 divisors, whose sum is σ = 2605857860864. Its totient is φ = 2605857860862.

The previous prime is 2605857860819. The next prime is 2605857860867. The reversal of 2605857860863 is 3680687585062.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2605857860863 - 2¹⁷ = 2605857729791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2605857860795 and 2605857860804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2605857860867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1302928930431 + 1302928930432.

It is an arithmetic number, because the mean of its divisors is an integer number (1302928930432).

Almost surely, 2^{2605857860863} is an apocalyptic number.

2605857860863 is a deficient number, since it is larger than the sum of its proper divisors (1).

2605857860863 is an equidigital number, since it uses as much as digits as its factorization.

2605857860863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116121600, while the sum is 64.

The spelling of 2605857860863 in words is "two trillion, six hundred five billion, eight hundred fifty-seven million, eight hundred sixty thousand, eight hundred sixty-three".