16705055563668 has 72 divisors (see below), whose sum is σ = 42245686508480. Its totient is φ = 5565844627200.

The previous prime is 16705055563667. The next prime is 16705055563741. The reversal of 16705055563668 is 86636555050761.

It is a happy number.

16705055563668 is a `hidden beast` number, since 1 + 6 + 7 + 0 + 5 + 0 + 5 + 5 + 563 + 6 + 68 = 666.

It is a super-2 number, since 2×16705055563668² (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 (16705055563667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 923075196 + ... + 923093292.

Almost surely, 2^{16705055563668} is an apocalyptic number.

16705055563668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16705055563668 is an abundant number, since it is smaller than the sum of its proper divisors (25540630944812).

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

16705055563668 is a wasteful number, since it uses less digits than its factorization.

16705055563668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28237 (or 28232 counting only the distinct ones).

The product of its (nonzero) digits is 136080000, while the sum is 63.

The spelling of 16705055563668 in words is "sixteen trillion, seven hundred five billion, fifty-five million, five hundred sixty-three thousand, six hundred sixty-eight".