8168880081706 has 4 divisors (see below), whose sum is σ = 12253320122562. Its totient is φ = 4084440040852.

The previous prime is 8168880081617. The next prime is 8168880081737. The reversal of 8168880081706 is 6071800888618.

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., 7844430225681 + 324449856025 = 2800791^2 + 569605^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2042220020425 + ... + 2042220020428.

Almost surely, 2^{8168880081706} is an apocalyptic number.

8168880081706 is a deficient number, since it is larger than the sum of its proper divisors (4084440040856).

8168880081706 is a wasteful number, since it uses less digits than its factorization.

8168880081706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4084440040855.

The product of its (nonzero) digits is 8257536, while the sum is 61.

The spelling of 8168880081706 in words is "eight trillion, one hundred sixty-eight billion, eight hundred eighty million, eighty-one thousand, seven hundred six".