20673248971 has 2 divisors, whose sum is σ = 20673248972. Its totient is φ = 20673248970.

The previous prime is 20673248957. The next prime is 20673249001. The reversal of 20673248971 is 17984237602.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20673248971 - 2⁹ = 20673248459 is a prime.

It is not a weakly prime, because it can be changed into another prime (20673248951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10336624485 + 10336624486.

It is an arithmetic number, because the mean of its divisors is an integer number (10336624486).

Almost surely, 2^20673248971 is an apocalyptic number.

20673248971 is a deficient number, since it is larger than the sum of its proper divisors (1).

20673248971 is an equidigital number, since it uses as much as digits as its factorization.

20673248971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 20673248971 in words is "twenty billion, six hundred seventy-three million, two hundred forty-eight thousand, nine hundred seventy-one".