20290440001 has 16 divisors (see below), whose sum is σ = 22041048960. Its totient is φ = 18567532800.

The previous prime is 20290439987. The next prime is 20290440007. The reversal of 20290440001 is 10004409202.

It is a cyclic number.

It is not a de Polignac number, because 20290440001 - 2⁵ = 20290439969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20290440007) 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 15 ways as a sum of consecutive naturals, for example, 837780 + ... + 861658.

It is an arithmetic number, because the mean of its divisors is an integer number (1377565560).

Almost surely, 2^20290440001 is an apocalyptic number.

It is an amenable number.

20290440001 is a deficient number, since it is larger than the sum of its proper divisors (1750608959).

20290440001 is a wasteful number, since it uses less digits than its factorization.

20290440001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24456.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 20290440001 its reverse (10004409202), we get a palindrome (30294849203).

The spelling of 20290440001 in words is "twenty billion, two hundred ninety million, four hundred forty thousand, one".