818128963987 has 2 divisors, whose sum is σ = 818128963988. Its totient is φ = 818128963986.

The previous prime is 818128963933. The next prime is 818128964041. The reversal of 818128963987 is 789369821818.

It is a balanced prime because it is at equal distance from previous prime (818128963933) and next prime (818128964041).

It is a cyclic number.

It is not a de Polignac number, because 818128963987 - 2⁷ = 818128963859 is a prime.

It is not a weakly prime, because it can be changed into another prime (818128963087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 409064481993 + 409064481994.

It is an arithmetic number, because the mean of its divisors is an integer number (409064481994).

Almost surely, 2^818128963987 is an apocalyptic number.

818128963987 is a deficient number, since it is larger than the sum of its proper divisors (1).

818128963987 is an equidigital number, since it uses as much as digits as its factorization.

818128963987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 83607552, while the sum is 70.

The spelling of 818128963987 in words is "eight hundred eighteen billion, one hundred twenty-eight million, nine hundred sixty-three thousand, nine hundred eighty-seven".