20272047163 has 2 divisors, whose sum is σ = 20272047164. Its totient is φ = 20272047162.

The previous prime is 20272047113. The next prime is 20272047167. The reversal of 20272047163 is 36174027202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20272047163 is a prime.

It is not a weakly prime, because it can be changed into another prime (20272047167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10136023581 + 10136023582.

It is an arithmetic number, because the mean of its divisors is an integer number (10136023582).

Almost surely, 2^20272047163 is an apocalyptic number.

20272047163 is a deficient number, since it is larger than the sum of its proper divisors (1).

20272047163 is an equidigital number, since it uses as much as digits as its factorization.

20272047163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 34.

The spelling of 20272047163 in words is "twenty billion, two hundred seventy-two million, forty-seven thousand, one hundred sixty-three".