20242547953 has 2 divisors, whose sum is σ = 20242547954. Its totient is φ = 20242547952.

The previous prime is 20242547933. The next prime is 20242547957. The reversal of 20242547953 is 35974524202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10139885809 + 10102662144 = 100697^2 + 100512^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20242547953 is a prime.

It is not a weakly prime, because it can be changed into another prime (20242547957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121273976 + 10121273977.

It is an arithmetic number, because the mean of its divisors is an integer number (10121273977).

Almost surely, 2^20242547953 is an apocalyptic number.

It is an amenable number.

20242547953 is a deficient number, since it is larger than the sum of its proper divisors (1).

20242547953 is an equidigital number, since it uses as much as digits as its factorization.

20242547953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 20242547953 in words is "twenty billion, two hundred forty-two million, five hundred forty-seven thousand, nine hundred fifty-three".