20645013130 has 16 divisors (see below), whose sum is σ = 42469741440. Its totient is φ = 7078290192.

The previous prime is 20645013119. The next prime is 20645013133. The reversal of 20645013130 is 3131054602.

It is a junction number, because it is equal to n+sod(n) for n = 20645013095 and 20645013104.

It is not an unprimeable number, because it can be changed into a prime (20645013133) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 147464310 + ... + 147464449.

It is an arithmetic number, because the mean of its divisors is an integer number (2654358840).

Almost surely, 2^20645013130 is an apocalyptic number.

20645013130 is an abundant number, since it is smaller than the sum of its proper divisors (21824728310).

20645013130 is a wasteful number, since it uses less digits than its factorization.

20645013130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294928773.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 20645013130 its reverse (3131054602), we get a palindrome (23776067732).

The spelling of 20645013130 in words is "twenty billion, six hundred forty-five million, thirteen thousand, one hundred thirty".