20422245504 has 32 divisors (see below), whose sum is σ = 54246590640. Its totient is φ = 6807415040.

The previous prime is 20422245479. The next prime is 20422245517. The reversal of 20422245504 is 40554222402.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×20422245504² (a number of 21 digits) contains 22 as substring.

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, 26591082 + ... + 26591849.

Almost surely, 2^20422245504 is an apocalyptic number.

20422245504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20422245504 is an abundant number, since it is smaller than the sum of its proper divisors (33824345136).

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

20422245504 is an equidigital number, since it uses as much as digits as its factorization.

20422245504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53182948 (or 53182936 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 30.

Adding to 20422245504 its reverse (40554222402), we get a palindrome (60976467906).

The spelling of 20422245504 in words is "twenty billion, four hundred twenty-two million, two hundred forty-five thousand, five hundred four".