870641437672987 has 2 divisors, whose sum is σ = 870641437672988. Its totient is φ = 870641437672986.

The previous prime is 870641437672777. The next prime is 870641437672997. The reversal of 870641437672987 is 789276734146078.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-870641437672987 is a prime.

It is not a weakly prime, because it can be changed into another prime (870641437672997) 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, 435320718836493 + 435320718836494.

It is an arithmetic number, because the mean of its divisors is an integer number (435320718836494).

Almost surely, 2^{870641437672987} is an apocalyptic number.

870641437672987 is a deficient number, since it is larger than the sum of its proper divisors (1).

870641437672987 is an equidigital number, since it uses as much as digits as its factorization.

870641437672987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4779565056, while the sum is 79.

The spelling of 870641437672987 in words is "eight hundred seventy trillion, six hundred forty-one billion, four hundred thirty-seven million, six hundred seventy-two thousand, nine hundred eighty-seven".