20423144130 has 16 divisors (see below), whose sum is σ = 49015545984. Its totient is φ = 5446171760.

The previous prime is 20423144087. The next prime is 20423144143. The reversal of 20423144130 is 3144132402.

It is a self number, because there is not a number n which added to its sum of digits gives 20423144130.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340385706 + ... + 340385765.

It is an arithmetic number, because the mean of its divisors is an integer number (3063471624).

Almost surely, 2^20423144130 is an apocalyptic number.

20423144130 is an abundant number, since it is smaller than the sum of its proper divisors (28592401854).

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

20423144130 is a wasteful number, since it uses less digits than its factorization.

20423144130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680771481.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20423144130 its reverse (3144132402), we get a palindrome (23567276532).

The spelling of 20423144130 in words is "twenty billion, four hundred twenty-three million, one hundred forty-four thousand, one hundred thirty".