20224423987 has 2 divisors, whose sum is σ = 20224423988. Its totient is φ = 20224423986.

The previous prime is 20224423957. The next prime is 20224424039. The reversal of 20224423987 is 78932442202.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20224423987 is a prime.

It is not a weakly prime, because it can be changed into another prime (20224423957) 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, 10112211993 + 10112211994.

It is an arithmetic number, because the mean of its divisors is an integer number (10112211994).

Almost surely, 2^20224423987 is an apocalyptic number.

20224423987 is a deficient number, since it is larger than the sum of its proper divisors (1).

20224423987 is an equidigital number, since it uses as much as digits as its factorization.

20224423987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 20224423987 in words is "twenty billion, two hundred twenty-four million, four hundred twenty-three thousand, nine hundred eighty-seven".