22065205720 has 32 divisors (see below), whose sum is σ = 50102197200. Its totient is φ = 8745107328.

The previous prime is 22065205711. The next prime is 22065205739. The reversal of 22065205720 is 2750256022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2526054 + ... + 2534773.

Almost surely, 2^22065205720 is an apocalyptic number.

22065205720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22065205720 is an abundant number, since it is smaller than the sum of its proper divisors (28036991480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22065205720 is a wasteful number, since it uses less digits than its factorization.

22065205720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5060947 (or 5060943 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The spelling of 22065205720 in words is "twenty-two billion, sixty-five million, two hundred five thousand, seven hundred twenty".