20434440130 has 32 divisors (see below), whose sum is σ = 41941461744. Its totient is φ = 7101198336.

The previous prime is 20434440119. The next prime is 20434440149. The reversal of 20434440130 is 3104443402.

It can be written as a sum of positive squares in 8 ways, for example, as 12744377881 + 7690062249 = 112891^2 + 87693^2 .

It is a super-3 number, since 3×20434440130³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20434440095 and 20434440104.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4620967 + ... + 4625386.

Almost surely, 2^20434440130 is an apocalyptic number.

20434440130 is an abundant number, since it is smaller than the sum of its proper divisors (21507021614).

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

20434440130 is a wasteful number, since it uses less digits than its factorization.

20434440130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9246390.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 20434440130 its reverse (3104443402), we get a palindrome (23538883532).

The spelling of 20434440130 in words is "twenty billion, four hundred thirty-four million, four hundred forty thousand, one hundred thirty".