20443161000 has 64 divisors (see below), whose sum is σ = 63782671680. Its totient is φ = 5451508800.

The previous prime is 20443160999. The next prime is 20443161029. The reversal of 20443161000 is 16134402.

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 15 ways as a sum of consecutive naturals, for example, 3404194 + ... + 3410193.

It is an arithmetic number, because the mean of its divisors is an integer number (996604245).

Almost surely, 2^20443161000 is an apocalyptic number.

20443161000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20443161000 is an abundant number, since it is smaller than the sum of its proper divisors (43339510680).

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

20443161000 is a wasteful number, since it uses less digits than its factorization.

20443161000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6814411 (or 6814397 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20443161000 its reverse (16134402), we get a palindrome (20459295402).

The spelling of 20443161000 in words is "twenty billion, four hundred forty-three million, one hundred sixty-one thousand".