870641434007887 has 2 divisors, whose sum is σ = 870641434007888. Its totient is φ = 870641434007886.

The previous prime is 870641434007833. The next prime is 870641434007911. The reversal of 870641434007887 is 788700434146078.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 870641434007887 - 2²³ = 870641425619279 is a prime.

It is a super-2 number, since 2×870641434007887² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (870641434007687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435320717003943 + 435320717003944.

It is an arithmetic number, because the mean of its divisors is an integer number (435320717003944).

Almost surely, 2^{870641434007887} is an apocalyptic number.

870641434007887 is a deficient number, since it is larger than the sum of its proper divisors (1).

870641434007887 is an equidigital number, since it uses as much as digits as its factorization.

870641434007887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 202309632, while the sum is 67.

The spelling of 870641434007887 in words is "eight hundred seventy trillion, six hundred forty-one billion, four hundred thirty-four million, seven thousand, eight hundred eighty-seven".