20134423020 has 24 divisors (see below), whose sum is σ = 56376384624. Its totient is φ = 5369179456.

The previous prime is 20134423019. The next prime is 20134423051. The reversal of 20134423020 is 2032443102.

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 7 ways as a sum of consecutive naturals, for example, 167786799 + ... + 167786918.

It is an arithmetic number, because the mean of its divisors is an integer number (2349016026).

Almost surely, 2^20134423020 is an apocalyptic number.

20134423020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20134423020 is an abundant number, since it is smaller than the sum of its proper divisors (36241961604).

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

20134423020 is a wasteful number, since it uses less digits than its factorization.

20134423020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335573729 (or 335573727 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20134423020 its reverse (2032443102), we get a palindrome (22166866122).

The spelling of 20134423020 in words is "twenty billion, one hundred thirty-four million, four hundred twenty-three thousand, twenty".