20805842422 has 32 divisors (see below), whose sum is σ = 32973177600. Its totient is φ = 9818934048.

The previous prime is 20805842303. The next prime is 20805842459. The reversal of 20805842422 is 22424850802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21515383 + ... + 21516349.

It is an arithmetic number, because the mean of its divisors is an integer number (1030411800).

Almost surely, 2^20805842422 is an apocalyptic number.

20805842422 is a deficient number, since it is larger than the sum of its proper divisors (12167335178).

20805842422 is a wasteful number, since it uses less digits than its factorization.

20805842422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500.

The product of its (nonzero) digits is 81920, while the sum is 37.

The spelling of 20805842422 in words is "twenty billion, eight hundred five million, eight hundred forty-two thousand, four hundred twenty-two".