22135729408 has 36 divisors (see below), whose sum is σ = 47583843748. Its totient is φ = 10216488960.

The previous prime is 22135729373. The next prime is 22135729463. The reversal of 22135729408 is 80492753122.

It can be written as a sum of positive squares in 2 ways, for example, as 14159096064 + 7976633344 = 118992^2 + 89312^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3322353 + ... + 3329008.

Almost surely, 2^22135729408 is an apocalyptic number.

It is an amenable number.

22135729408 is an abundant number, since it is smaller than the sum of its proper divisors (25448114340).

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

22135729408 is an equidigital number, since it uses as much as digits as its factorization.

22135729408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6651390 (or 6651376 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 22135729408 in words is "twenty-two billion, one hundred thirty-five million, seven hundred twenty-nine thousand, four hundred eight".