20001304443 has 16 divisors (see below), whose sum is σ = 27243611136. Its totient is φ = 13046762880.

The previous prime is 20001304327. The next prime is 20001304469. The reversal of 20001304443 is 34440310002.

It is not a de Polignac number, because 20001304443 - 2¹⁰ = 20001303419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20001304483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 526323 + ... + 563043.

It is an arithmetic number, because the mean of its divisors is an integer number (1702725696).

Almost surely, 2^20001304443 is an apocalyptic number.

20001304443 is a deficient number, since it is larger than the sum of its proper divisors (7242306693).

20001304443 is a wasteful number, since it uses less digits than its factorization.

20001304443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40634.

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

Adding to 20001304443 its reverse (34440310002), we get a palindrome (54441614445).

The spelling of 20001304443 in words is "twenty billion, one million, three hundred four thousand, four hundred forty-three".