206993161775 has 12 divisors (see below), whose sum is σ = 262132618272. Its totient is φ = 162071240640.

The previous prime is 206993161747. The next prime is 206993161783. The reversal of 206993161775 is 577161399602.

206993161775 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 206993161775 - 2⁸ = 206993161519 is a prime.

It is a super-2 number, since 2×206993161775² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206993161775.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88081022 + ... + 88083371.

It is an arithmetic number, because the mean of its divisors is an integer number (21844384856).

Almost surely, 2^206993161775 is an apocalyptic number.

206993161775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

206993161775 is a deficient number, since it is larger than the sum of its proper divisors (55139456497).

206993161775 is a wasteful number, since it uses less digits than its factorization.

206993161775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176164450 (or 176164445 counting only the distinct ones).

The product of its (nonzero) digits is 4286520, while the sum is 56.

The spelling of 206993161775 in words is "two hundred six billion, nine hundred ninety-three million, one hundred sixty-one thousand, seven hundred seventy-five".