869666835127 has 2 divisors, whose sum is σ = 869666835128. Its totient is φ = 869666835126.

The previous prime is 869666835119. The next prime is 869666835133. The reversal of 869666835127 is 721538666968.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 869666835127 - 2³ = 869666835119 is a prime.

It is a super-2 number, since 2×869666835127² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869666835157) 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, 434833417563 + 434833417564.

It is an arithmetic number, because the mean of its divisors is an integer number (434833417564).

Almost surely, 2^869666835127 is an apocalyptic number.

869666835127 is a deficient number, since it is larger than the sum of its proper divisors (1).

869666835127 is an equidigital number, since it uses as much as digits as its factorization.

869666835127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 156764160, while the sum is 67.

The spelling of 869666835127 in words is "eight hundred sixty-nine billion, six hundred sixty-six million, eight hundred thirty-five thousand, one hundred twenty-seven".