820210286887 has 2 divisors, whose sum is σ = 820210286888. Its totient is φ = 820210286886.

The previous prime is 820210286879. The next prime is 820210286893. The reversal of 820210286887 is 788682012028.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 820210286887 - 2³ = 820210286879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (820210286587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410105143443 + 410105143444.

It is an arithmetic number, because the mean of its divisors is an integer number (410105143444).

Almost surely, 2^820210286887 is an apocalyptic number.

820210286887 is a deficient number, since it is larger than the sum of its proper divisors (1).

820210286887 is an equidigital number, since it uses as much as digits as its factorization.

820210286887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1376256, while the sum is 52.

The spelling of 820210286887 in words is "eight hundred twenty billion, two hundred ten million, two hundred eighty-six thousand, eight hundred eighty-seven".