20682891167 has 8 divisors (see below), whose sum is σ = 21232839936. Its totient is φ = 20136076632.

The previous prime is 20682891149. The next prime is 20682891179. The reversal of 20682891167 is 76119828602.

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

It is a cyclic number.

It is not a de Polignac number, because 20682891167 - 2⁸ = 20682890911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20682891967) 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, 770183 + ... + 796584.

It is an arithmetic number, because the mean of its divisors is an integer number (2654104992).

Almost surely, 2^20682891167 is an apocalyptic number.

20682891167 is a deficient number, since it is larger than the sum of its proper divisors (549948769).

20682891167 is a wasteful number, since it uses less digits than its factorization.

20682891167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567117.

The product of its (nonzero) digits is 580608, while the sum is 50.

The spelling of 20682891167 in words is "twenty billion, six hundred eighty-two million, eight hundred ninety-one thousand, one hundred sixty-seven".