20005424101 has 8 divisors (see below), whose sum is σ = 22811615064. Its totient is φ = 17380277760.

The previous prime is 20005424053. The next prime is 20005424107. The reversal of 20005424101 is 10142450002.

It can be written as a sum of positive squares in 4 ways, for example, as 803779201 + 19201644900 = 28351^2 + 138570^2 .

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

It is not a de Polignac number, because 20005424101 - 2³¹ = 17857940453 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 (20005424107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45260920 + ... + 45261361.

It is an arithmetic number, because the mean of its divisors is an integer number (2851451883).

Almost surely, 2^20005424101 is an apocalyptic number.

It is an amenable number.

20005424101 is a deficient number, since it is larger than the sum of its proper divisors (2806190963).

20005424101 is a wasteful number, since it uses less digits than its factorization.

20005424101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90522311.

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 20005424101 its reverse (10142450002), we get a palindrome (30147874103).

The spelling of 20005424101 in words is "twenty billion, five million, four hundred twenty-four thousand, one hundred one".