22029065856 has 768 divisors, whose sum is σ = 80838051840. Its totient is φ = 5835608064.

The previous prime is 22029065801. The next prime is 22029065857. The reversal of 22029065856 is 65856092022.

22029065856 is a `hidden beast` number, since 220 + 290 + 65 + 85 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22029065857) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 265410391 + ... + 265410473.

It is an arithmetic number, because the mean of its divisors is an integer number (105257880).

Almost surely, 2^22029065856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22029065856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40419025920).

22029065856 is an abundant number, since it is smaller than the sum of its proper divisors (58808985984).

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

22029065856 is an equidigital number, since it uses as much as digits as its factorization.

22029065856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

It can be divided in two parts, 220290 and 65856, that added together give a triangular number (286146 = T₇₅₆).

The spelling of 22029065856 in words is "twenty-two billion, twenty-nine million, sixty-five thousand, eight hundred fifty-six".