20115343404 has 144 divisors (see below), whose sum is σ = 57250502400. Its totient is φ = 5908712832.

The previous prime is 20115343403. The next prime is 20115343421. The reversal of 20115343404 is 40434351102.

It is a happy number.

20115343404 is a `hidden beast` number, since 201 + 1 + 53 + 4 + 3 + 404 = 666.

It is not an unprimeable number, because it can be changed into a prime (20115343403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6661407 + ... + 6664425.

Almost surely, 2^20115343404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20115343404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28625251200).

20115343404 is an abundant number, since it is smaller than the sum of its proper divisors (37135158996).

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

20115343404 is a wasteful number, since it uses less digits than its factorization.

20115343404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3684 (or 3679 counting only the distinct ones).

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

Adding to 20115343404 its reverse (40434351102), we get a palindrome (60549694506).

The spelling of 20115343404 in words is "twenty billion, one hundred fifteen million, three hundred forty-three thousand, four hundred four".