1689668817036 has 24 divisors (see below), whose sum is σ = 4034248029504. Its totient is φ = 550124730960.

The previous prime is 1689668817019. The next prime is 1689668817037. The reversal of 1689668817036 is 6307188669861.

It is a super-2 number, since 2×1689668817036² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1689668817037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1637275470 + ... + 1637276501.

It is an arithmetic number, because the mean of its divisors is an integer number (168093667896).

Almost surely, 2^{1689668817036} is an apocalyptic number.

It is an amenable number.

1689668817036 is an abundant number, since it is smaller than the sum of its proper divisors (2344579212468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1689668817036 is a wasteful number, since it uses less digits than its factorization.

1689668817036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274552021 (or 3274552019 counting only the distinct ones).

The product of its (nonzero) digits is 125411328, while the sum is 69.

The spelling of 1689668817036 in words is "one trillion, six hundred eighty-nine billion, six hundred sixty-eight million, eight hundred seventeen thousand, thirty-six".