20043351291 has 16 divisors (see below), whose sum is σ = 26775627008. Its totient is φ = 13336682400.

The previous prime is 20043351259. The next prime is 20043351343. The reversal of 20043351291 is 19215334002.

It is not a de Polignac number, because 20043351291 - 2⁵ = 20043351259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20043351241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4735146 + ... + 4739376.

It is an arithmetic number, because the mean of its divisors is an integer number (1673476688).

Almost surely, 2^20043351291 is an apocalyptic number.

20043351291 is a deficient number, since it is larger than the sum of its proper divisors (6732275717).

20043351291 is a wasteful number, since it uses less digits than its factorization.

20043351291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6882.

The product of its (nonzero) digits is 6480, while the sum is 30.

Adding to 20043351291 its reverse (19215334002), we get a palindrome (39258685293).

The spelling of 20043351291 in words is "twenty billion, forty-three million, three hundred fifty-one thousand, two hundred ninety-one".