20043215530 has 32 divisors (see below), whose sum is σ = 38859685200. Its totient is φ = 7399299072.

The previous prime is 20043215461. The next prime is 20043215627. The reversal of 20043215530 is 3551234002.

It can be written as a sum of positive squares in 8 ways, for example, as 2354481529 + 17688734001 = 48523^2 + 132999^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20043215495 and 20043215504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1110216 + ... + 1128124.

Almost surely, 2^20043215530 is an apocalyptic number.

20043215530 is a deficient number, since it is larger than the sum of its proper divisors (18816469670).

20043215530 is a wasteful number, since it uses less digits than its factorization.

20043215530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26538.

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 20043215530 its reverse (3551234002), we get a palindrome (23594449532).

The spelling of 20043215530 in words is "twenty billion, forty-three million, two hundred fifteen thousand, five hundred thirty".