20889060886 has 4 divisors (see below), whose sum is σ = 31333591332. Its totient is φ = 10444530442.

The previous prime is 20889060877. The next prime is 20889060911. The reversal of 20889060886 is 68806098802.

It is a semiprime because it is the product of two 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 as a sum of consecutive naturals, namely, 5222265220 + ... + 5222265223.

It is an arithmetic number, because the mean of its divisors is an integer number (7833397833).

Almost surely, 2^20889060886 is an apocalyptic number.

20889060886 is a deficient number, since it is larger than the sum of its proper divisors (10444530446).

20889060886 is a wasteful number, since it uses less digits than its factorization.

20889060886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10444530445.

The product of its (nonzero) digits is 2654208, while the sum is 55.

The spelling of 20889060886 in words is "twenty billion, eight hundred eighty-nine million, sixty thousand, eight hundred eighty-six".