2805863888827 has 2 divisors, whose sum is σ = 2805863888828. Its totient is φ = 2805863888826.

The previous prime is 2805863888767. The next prime is 2805863888981. The reversal of 2805863888827 is 7288883685082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2805863888827 - 2³¹ = 2803716405179 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2805863888827.

It is not a weakly prime, because it can be changed into another prime (2805863882827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1402931944413 + 1402931944414.

It is an arithmetic number, because the mean of its divisors is an integer number (1402931944414).

Almost surely, 2^{2805863888827} is an apocalyptic number.

2805863888827 is a deficient number, since it is larger than the sum of its proper divisors (1).

2805863888827 is an equidigital number, since it uses as much as digits as its factorization.

2805863888827 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 660602880, while the sum is 73.

The spelling of 2805863888827 in words is "two trillion, eight hundred five billion, eight hundred sixty-three million, eight hundred eighty-eight thousand, eight hundred twenty-seven".