20423143445304 has 128 divisors (see below), whose sum is σ = 51404114350080. Its totient is φ = 6761740339200.

The previous prime is 20423143445239. The next prime is 20423143445333. The reversal of 20423143445304 is 40354434132402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2875280617 + ... + 2875287719.

It is an arithmetic number, because the mean of its divisors is an integer number (401594643360).

Almost surely, 2^{20423143445304} is an apocalyptic number.

20423143445304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20423143445304 is an abundant number, since it is smaller than the sum of its proper divisors (30980970904776).

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

20423143445304 is a wasteful number, since it uses less digits than its factorization.

20423143445304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8701 (or 8697 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 39.

Adding to 20423143445304 its reverse (40354434132402), we get a palindrome (60777577577706).

The spelling of 20423143445304 in words is "twenty trillion, four hundred twenty-three billion, one hundred forty-three million, four hundred forty-five thousand, three hundred four".