869506050089 has 2 divisors, whose sum is σ = 869506050090. Its totient is φ = 869506050088.

The previous prime is 869506050073. The next prime is 869506050097. The reversal of 869506050089 is 980050605968.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 843289582864 + 26216467225 = 918308^2 + 161915^2 .

It is a cyclic number.

It is not a de Polignac number, because 869506050089 - 2⁴ = 869506050073 is a prime.

It is a super-2 number, since 2×869506050089² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (869506050059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434753025044 + 434753025045.

It is an arithmetic number, because the mean of its divisors is an integer number (434753025045).

Almost surely, 2^869506050089 is an apocalyptic number.

It is an amenable number.

869506050089 is a deficient number, since it is larger than the sum of its proper divisors (1).

869506050089 is an equidigital number, since it uses as much as digits as its factorization.

869506050089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4665600, while the sum is 56.

The spelling of 869506050089 in words is "eight hundred sixty-nine billion, five hundred six million, fifty thousand, eighty-nine".