20223240761 has 2 divisors, whose sum is σ = 20223240762. Its totient is φ = 20223240760.

The previous prime is 20223240743. The next prime is 20223240803. The reversal of 20223240761 is 16704232202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13051691536 + 7171549225 = 114244^2 + 84685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20223240761 is a prime.

It is not a weakly prime, because it can be changed into another prime (20223240461) 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, 10111620380 + 10111620381.

It is an arithmetic number, because the mean of its divisors is an integer number (10111620381).

Almost surely, 2^20223240761 is an apocalyptic number.

It is an amenable number.

20223240761 is a deficient number, since it is larger than the sum of its proper divisors (1).

20223240761 is an equidigital number, since it uses as much as digits as its factorization.

20223240761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 29.

Adding to 20223240761 its reverse (16704232202), we get a palindrome (36927472963).

The spelling of 20223240761 in words is "twenty billion, two hundred twenty-three million, two hundred forty thousand, seven hundred sixty-one".