206080762178 has 4 divisors (see below), whose sum is σ = 309121143270. Its totient is φ = 103040381088.

The previous prime is 206080762169. The next prime is 206080762189. The reversal of 206080762178 is 871267080602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 193734663409 + 12346098769 = 440153^2 + 111113^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51520190543 + ... + 51520190546.

Almost surely, 2^206080762178 is an apocalyptic number.

206080762178 is a deficient number, since it is larger than the sum of its proper divisors (103040381092).

206080762178 is a wasteful number, since it uses less digits than its factorization.

206080762178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103040381091.

The product of its (nonzero) digits is 451584, while the sum is 47.

The spelling of 206080762178 in words is "two hundred six billion, eighty million, seven hundred sixty-two thousand, one hundred seventy-eight".