1669894868612 has 12 divisors (see below), whose sum is σ = 2922334002000. Its totient is φ = 834942296616.

The previous prime is 1669894868597. The next prime is 1669894868669. The reversal of 1669894868612 is 2168684989661.

It is a self number, because there is not a number n which added to its sum of digits gives 1669894868612.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499862 + ... + 1894637.

It is an arithmetic number, because the mean of its divisors is an integer number (243527833500).

Almost surely, 2^{1669894868612} is an apocalyptic number.

It is an amenable number.

1669894868612 is a deficient number, since it is larger than the sum of its proper divisors (1252439133388).

1669894868612 is a wasteful number, since it uses less digits than its factorization.

1669894868612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568850 (or 2568848 counting only the distinct ones).

The product of its digits is 429981696, while the sum is 74.

The spelling of 1669894868612 in words is "one trillion, six hundred sixty-nine billion, eight hundred ninety-four million, eight hundred sixty-eight thousand, six hundred twelve".