20220040000 has 70 divisors (see below), whose sum is σ = 50139226874. Its totient is φ = 8088000000.

The previous prime is 20220039997. The next prime is 20220040019. The reversal of 20220040000 is 4002202.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 4109322816 + 16110717184 = 64104^2 + 126928^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 212751 + ... + 292750.

Almost surely, 2^20220040000 is an apocalyptic number.

20220040000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20220040000 is an abundant number, since it is smaller than the sum of its proper divisors (29919186874).

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

20220040000 is an frugal number, since it uses more digits than its factorization.

20220040000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505533 (or 505508 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

Adding to 20220040000 its reverse (4002202), we get a palindrome (20224042202).

The spelling of 20220040000 in words is "twenty billion, two hundred twenty million, forty thousand".