20473167571 has 4 divisors (see below), whose sum is σ = 20558829600. Its totient is φ = 20387505544.

The previous prime is 20473167521. The next prime is 20473167577. The reversal of 20473167571 is 17576137402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20473167571 - 2⁹ = 20473167059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20473167577) 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 3 ways as a sum of consecutive naturals, for example, 42830656 + ... + 42831133.

It is an arithmetic number, because the mean of its divisors is an integer number (5139707400).

Almost surely, 2^20473167571 is an apocalyptic number.

20473167571 is a deficient number, since it is larger than the sum of its proper divisors (85662029).

20473167571 is an equidigital number, since it uses as much as digits as its factorization.

20473167571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85662028.

The product of its (nonzero) digits is 246960, while the sum is 43.

The spelling of 20473167571 in words is "twenty billion, four hundred seventy-three million, one hundred sixty-seven thousand, five hundred seventy-one".