20424004401 has 8 divisors (see below), whose sum is σ = 27373105120. Its totient is φ = 13545453312.

The previous prime is 20424004397. The next prime is 20424004481. The reversal of 20424004401 is 10440042402.

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

It is not a de Polignac number, because 20424004401 - 2² = 20424004397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20424004481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17636731 + ... + 17637888.

It is an arithmetic number, because the mean of its divisors is an integer number (3421638140).

Almost surely, 2^20424004401 is an apocalyptic number.

It is an amenable number.

20424004401 is a deficient number, since it is larger than the sum of its proper divisors (6949100719).

20424004401 is a wasteful number, since it uses less digits than its factorization.

20424004401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35274815.

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

Adding to 20424004401 its reverse (10440042402), we get a palindrome (30864046803).

The spelling of 20424004401 in words is "twenty billion, four hundred twenty-four million, four thousand, four hundred one".