20673249001 has 2 divisors, whose sum is σ = 20673249002. Its totient is φ = 20673249000.

The previous prime is 20673248971. The next prime is 20673249029. The reversal of 20673249001 is 10094237602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20413265625 + 259983376 = 142875^2 + 16124^2 .

It is a cyclic number.

It is not a de Polignac number, because 20673249001 - 2¹¹ = 20673246953 is a prime.

It is not a weakly prime, because it can be changed into another prime (20673249071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10336624500 + 10336624501.

It is an arithmetic number, because the mean of its divisors is an integer number (10336624501).

Almost surely, 2^20673249001 is an apocalyptic number.

It is an amenable number.

20673249001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20673249001 is an equidigital number, since it uses as much as digits as its factorization.

20673249001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The spelling of 20673249001 in words is "twenty billion, six hundred seventy-three million, two hundred forty-nine thousand, one".