20272206949 has 2 divisors, whose sum is σ = 20272206950. Its totient is φ = 20272206948.

The previous prime is 20272206947. The next prime is 20272206953. The reversal of 20272206949 is 94960227202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19234916100 + 1037290849 = 138690^2 + 32207^2 .

It is a cyclic number.

It is not a de Polignac number, because 20272206949 - 2¹ = 20272206947 is a prime.

Together with 20272206947, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20272206943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10136103474 + 10136103475.

It is an arithmetic number, because the mean of its divisors is an integer number (10136103475).

Almost surely, 2^20272206949 is an apocalyptic number.

It is an amenable number.

20272206949 is a deficient number, since it is larger than the sum of its proper divisors (1).

20272206949 is an equidigital number, since it uses as much as digits as its factorization.

20272206949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 20272206949 in words is "twenty billion, two hundred seventy-two million, two hundred six thousand, nine hundred forty-nine".