20404434130 has 16 divisors (see below), whose sum is σ = 38324850624. Its totient is φ = 7806913840.

The previous prime is 20404434091. The next prime is 20404434203. The reversal of 20404434130 is 3143440402.

It is a junction number, because it is equal to n+sod(n) for n = 20404434095 and 20404434104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44357236 + ... + 44357695.

It is an arithmetic number, because the mean of its divisors is an integer number (2395303164).

Almost surely, 2^20404434130 is an apocalyptic number.

20404434130 is a deficient number, since it is larger than the sum of its proper divisors (17920416494).

20404434130 is a wasteful number, since it uses less digits than its factorization.

20404434130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88714961.

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

Adding to 20404434130 its reverse (3143440402), we get a palindrome (23547874532).

The spelling of 20404434130 in words is "twenty billion, four hundred four million, four hundred thirty-four thousand, one hundred thirty".