1691210140204 has 12 divisors (see below), whose sum is σ = 3187280648944. Its totient is φ = 780558526224.

The previous prime is 1691210140181. The next prime is 1691210140219. The reversal of 1691210140204 is 4020410121961.

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, 16261635912 + ... + 16261636015.

Almost surely, 2^{1691210140204} is an apocalyptic number.

It is an amenable number.

1691210140204 is a deficient number, since it is larger than the sum of its proper divisors (1496070508740).

1691210140204 is a wasteful number, since it uses less digits than its factorization.

1691210140204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32523271944 (or 32523271942 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 1691210140204 in words is "one trillion, six hundred ninety-one billion, two hundred ten million, one hundred forty thousand, two hundred four".