20663204001 has 32 divisors (see below), whose sum is σ = 31123211136. Its totient is φ = 12184603200.

The previous prime is 20663203991. The next prime is 20663204041. The reversal of 20663204001 is 10040236602.

It is not a de Polignac number, because 20663204001 - 2¹³ = 20663195809 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20663204041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77811 + ... + 217671.

It is an arithmetic number, because the mean of its divisors is an integer number (972600348).

Almost surely, 2^20663204001 is an apocalyptic number.

It is an amenable number.

20663204001 is a deficient number, since it is larger than the sum of its proper divisors (10460007135).

20663204001 is a wasteful number, since it uses less digits than its factorization.

20663204001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139934 (or 139912 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The spelling of 20663204001 in words is "twenty billion, six hundred sixty-three million, two hundred four thousand, one".