1669171916898 has 24 divisors (see below), whose sum is σ = 3644146327536. Its totient is φ = 552143381400.

The previous prime is 1669171916869. The next prime is 1669171916911. The reversal of 1669171916898 is 8986191719661.

It is a super-2 number, since 2×1669171916898² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 353935708 + ... + 353940423.

It is an arithmetic number, because the mean of its divisors is an integer number (151839430314).

Almost surely, 2^{1669171916898} is an apocalyptic number.

1669171916898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1669171916898 is an abundant number, since it is smaller than the sum of its proper divisors (1974974410638).

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

1669171916898 is a wasteful number, since it uses less digits than its factorization.

1669171916898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707876270 (or 707876267 counting only the distinct ones).

The product of its digits is 70543872, while the sum is 72.

The spelling of 1669171916898 in words is "one trillion, six hundred sixty-nine billion, one hundred seventy-one million, nine hundred sixteen thousand, eight hundred ninety-eight".