869666835122 has 6 divisors (see below), whose sum is σ = 1304502230943. Its totient is φ = 434832758142.

The previous prime is 869666835119. The next prime is 869666835127. The reversal of 869666835122 is 221538666968.

It can be written as a sum of positive squares in only one way, i.e., 434833417561 + 434833417561 = 659419^2 + 659419^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=659419.

It is a super-2 number, since 2×869666835122² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (869666835127) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 989129 + ... + 1648547.

Almost surely, 2^869666835122 is an apocalyptic number.

869666835122 is a deficient number, since it is larger than the sum of its proper divisors (434835395821).

869666835122 is an frugal number, since it uses more digits than its factorization.

869666835122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318840 (or 659421 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 62.

The spelling of 869666835122 in words is "eight hundred sixty-nine billion, six hundred sixty-six million, eight hundred thirty-five thousand, one hundred twenty-two".