20837168441 has 4 divisors (see below), whose sum is σ = 20838006672. Its totient is φ = 20836330212.

The previous prime is 20837168437. The next prime is 20837168449. The reversal of 20837168441 is 14486173802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20837168441 - 2² = 20837168437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20837168392 and 20837168401.

It is not an unprimeable number, because it can be changed into a prime (20837168449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380651 + ... + 431936.

It is an arithmetic number, because the mean of its divisors is an integer number (5209501668).

Almost surely, 2^20837168441 is an apocalyptic number.

It is an amenable number.

20837168441 is a deficient number, since it is larger than the sum of its proper divisors (838231).

20837168441 is an equidigital number, since it uses as much as digits as its factorization.

20837168441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838230.

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 20837168441 in words is "twenty billion, eight hundred thirty-seven million, one hundred sixty-eight thousand, four hundred forty-one".