16668198485 has 8 divisors (see below), whose sum is σ = 20691556920. Its totient is φ = 12874746304.

The previous prime is 16668198473. The next prime is 16668198499. The reversal of 16668198485 is 58489186661.

It can be written as a sum of positive squares in 4 ways, for example, as 5120976721 + 11547221764 = 71561^2 + 107458^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16668198485 - 2¹⁰ = 16668197461 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57476402 + ... + 57476691.

It is an arithmetic number, because the mean of its divisors is an integer number (2586444615).

Almost surely, 2^16668198485 is an apocalyptic number.

It is an amenable number.

16668198485 is a deficient number, since it is larger than the sum of its proper divisors (4023358435).

16668198485 is a wasteful number, since it uses less digits than its factorization.

16668198485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114953127.

The product of its digits is 19906560, while the sum is 62.

The spelling of 16668198485 in words is "sixteen billion, six hundred sixty-eight million, one hundred ninety-eight thousand, four hundred eighty-five".