20424220401 has 8 divisors (see below), whose sum is σ = 29327085760. Its totient is φ = 12568750992.

The previous prime is 20424220387. The next prime is 20424220459. The reversal of 20424220401 is 10402242402.

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

It is not a de Polignac number, because 20424220401 - 2¹³ = 20424212209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20424220471) 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, 261848941 + ... + 261849018.

It is an arithmetic number, because the mean of its divisors is an integer number (3665885720).

Almost surely, 2^20424220401 is an apocalyptic number.

It is an amenable number.

20424220401 is a deficient number, since it is larger than the sum of its proper divisors (8902865359).

20424220401 is a wasteful number, since it uses less digits than its factorization.

20424220401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523697975.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 20424220401 its reverse (10402242402), we get a palindrome (30826462803).

The spelling of 20424220401 in words is "twenty billion, four hundred twenty-four million, two hundred twenty thousand, four hundred one".