206928691177 has 8 divisors (see below), whose sum is σ = 222849905600. Its totient is φ = 191007994320.

The previous prime is 206928691169. The next prime is 206928691181. The reversal of 206928691177 is 771196829602.

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

It is not a de Polignac number, because 206928691177 - 2³ = 206928691169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206928691777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1230052 + ... + 1388122.

It is an arithmetic number, because the mean of its divisors is an integer number (27856238200).

Almost surely, 2^206928691177 is an apocalyptic number.

It is an amenable number.

206928691177 is a deficient number, since it is larger than the sum of its proper divisors (15921214423).

206928691177 is a wasteful number, since it uses less digits than its factorization.

206928691177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258783.

The product of its (nonzero) digits is 4572288, while the sum is 58.

The spelling of 206928691177 in words is "two hundred six billion, nine hundred twenty-eight million, six hundred ninety-one thousand, one hundred seventy-seven".