869569648616 has 16 divisors (see below), whose sum is σ = 1630453695300. Its totient is φ = 434781996544.

The previous prime is 869569648559. The next prime is 869569648643. The reversal of 869569648616 is 616846965968.

It can be written as a sum of positive squares in 2 ways, for example, as 660952740100 + 208616908516 = 812990^2 + 456746^2 .

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1567640 + ... + 2048568.

Almost surely, 2^869569648616 is an apocalyptic number.

It is an amenable number.

869569648616 is a deficient number, since it is larger than the sum of its proper divisors (760884046684).

869569648616 is a wasteful number, since it uses less digits than its factorization.

869569648616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706948 (or 706944 counting only the distinct ones).

The product of its digits is 806215680, while the sum is 74.

The spelling of 869569648616 in words is "eight hundred sixty-nine billion, five hundred sixty-nine million, six hundred forty-eight thousand, six hundred sixteen".