20000405071 has 8 divisors (see below), whose sum is σ = 20266588160. Its totient is φ = 19735446528.

The previous prime is 20000405069. The next prime is 20000405101. The reversal of 20000405071 is 17050400002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20000405071 - 2¹ = 20000405069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000405471) 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 7 ways as a sum of consecutive naturals, for example, 273231 + ... + 338608.

It is an arithmetic number, because the mean of its divisors is an integer number (2533323520).

Almost surely, 2^20000405071 is an apocalyptic number.

20000405071 is a deficient number, since it is larger than the sum of its proper divisors (266183089).

20000405071 is an equidigital number, since it uses as much as digits as its factorization.

20000405071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612273.

The product of its (nonzero) digits is 280, while the sum is 19.

Adding to 20000405071 its reverse (17050400002), we get a palindrome (37050805073).

The spelling of 20000405071 in words is "twenty billion, four hundred five thousand, seventy-one".