20659800001 has 32 divisors (see below), whose sum is σ = 23232448512. Its totient is φ = 18282608640.

The previous prime is 20659799987. The next prime is 20659800017. The reversal of 20659800001 is 10000895602.

It is a cyclic number.

It is not a de Polignac number, because 20659800001 - 2⁵ = 20659799969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20659800061) 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 31 ways as a sum of consecutive naturals, for example, 2755680 + ... + 2763166.

It is an arithmetic number, because the mean of its divisors is an integer number (726014016).

Almost surely, 2^20659800001 is an apocalyptic number.

It is an amenable number.

20659800001 is a deficient number, since it is larger than the sum of its proper divisors (2572648511).

20659800001 is a wasteful number, since it uses less digits than its factorization.

20659800001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7689.

The product of its (nonzero) digits is 4320, while the sum is 31.

The spelling of 20659800001 in words is "twenty billion, six hundred fifty-nine million, eight hundred thousand, one".