20043215504 has 20 divisors (see below), whose sum is σ = 41820940476. Its totient is φ = 9250714752.

The previous prime is 20043215461. The next prime is 20043215627. The reversal of 20043215504 is 40551234002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12078010000 + 7965205504 = 109900^2 + 89248^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 48180599 + ... + 48181014.

Almost surely, 2^20043215504 is an apocalyptic number.

It is an amenable number.

20043215504 is an abundant number, since it is smaller than the sum of its proper divisors (21777724972).

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

20043215504 is a wasteful number, since it uses less digits than its factorization.

20043215504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96361634 (or 96361628 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 20043215504 its reverse (40551234002), we get a palindrome (60594449506).

The spelling of 20043215504 in words is "twenty billion, forty-three million, two hundred fifteen thousand, five hundred four".