20022040040 has 64 divisors (see below), whose sum is σ = 48154901760. Its totient is φ = 7473748480.

The previous prime is 20022040019. The next prime is 20022040043. The reversal of 20022040040 is 4004022002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20022039997 and 20022040024.

It is not an unprimeable number, because it can be changed into a prime (20022040043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227684 + ... + 303123.

It is an arithmetic number, because the mean of its divisors is an integer number (752420340).

Almost surely, 2^20022040040 is an apocalyptic number.

20022040040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20022040040 is an abundant number, since it is smaller than the sum of its proper divisors (28132861720).

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

20022040040 is a wasteful number, since it uses less digits than its factorization.

20022040040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530882 (or 530878 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

Adding to 20022040040 its reverse (4004022002), we get a palindrome (24026062042).

The spelling of 20022040040 in words is "twenty billion, twenty-two million, forty thousand, forty".