16198994106477 has 144 divisors (see below), whose sum is σ = 30491060620800. Its totient is φ = 8091999377280.

The previous prime is 16198994106457. The next prime is 16198994106479. The reversal of 16198994106477 is 77460149989161.

16198994106477 is a `hidden beast` number, since 1 + 6 + 1 + 9 + 89 + 9 + 410 + 64 + 77 = 666.

It is not a de Polignac number, because 16198994106477 - 2¹⁰ = 16198994105453 is a prime.

It is a super-2 number, since 2×16198994106477² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16198994106479) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 659260602 + ... + 659285172.

Almost surely, 2^{16198994106477} is an apocalyptic number.

It is an amenable number.

16198994106477 is a deficient number, since it is larger than the sum of its proper divisors (14292066514323).

16198994106477 is a wasteful number, since it uses less digits than its factorization.

16198994106477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27888 (or 27872 counting only the distinct ones).

The product of its (nonzero) digits is 164602368, while the sum is 72.

The spelling of 16198994106477 in words is "sixteen trillion, one hundred ninety-eight billion, nine hundred ninety-four million, one hundred six thousand, four hundred seventy-seven".