20680808158 has 8 divisors (see below), whose sum is σ = 31144803480. Its totient is φ = 10299207000.

The previous prime is 20680808149. The next prime is 20680808171. The reversal of 20680808158 is 85180808602.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20597913 + ... + 20598916.

It is an arithmetic number, because the mean of its divisors is an integer number (3893100435).

Almost surely, 2^20680808158 is an apocalyptic number.

20680808158 is a deficient number, since it is larger than the sum of its proper divisors (10463995322).

20680808158 is a wasteful number, since it uses less digits than its factorization.

20680808158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41197082.

The product of its (nonzero) digits is 245760, while the sum is 46.

The spelling of 20680808158 in words is "twenty billion, six hundred eighty million, eight hundred eight thousand, one hundred fifty-eight".