22020315264 has 160 divisors (see below), whose sum is σ = 67792754700. Its totient is φ = 7086901248.

The previous prime is 22020315199. The next prime is 22020315287. The reversal of 22020315264 is 46251302022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22020185664 + 129600 = 148392^2 + 360^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 264054 + ... + 337290.

Almost surely, 2^22020315264 is an apocalyptic number.

22020315264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22020315264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33896377350).

22020315264 is an abundant number, since it is smaller than the sum of its proper divisors (45772439436).

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

22020315264 is an equidigital number, since it uses as much as digits as its factorization.

22020315264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73292 (or 73271 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 22020315264 its reverse (46251302022), we get a palindrome (68271617286).

The spelling of 22020315264 in words is "twenty-two billion, twenty million, three hundred fifteen thousand, two hundred sixty-four".