22423243987 has 2 divisors, whose sum is σ = 22423243988. Its totient is φ = 22423243986.

The previous prime is 22423243963. The next prime is 22423244023. The reversal of 22423243987 is 78934232422.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22423243987 is a prime.

It is not a weakly prime, because it can be changed into another prime (22423243907) 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, 11211621993 + 11211621994.

It is an arithmetic number, because the mean of its divisors is an integer number (11211621994).

Almost surely, 2^22423243987 is an apocalyptic number.

22423243987 is a deficient number, since it is larger than the sum of its proper divisors (1).

22423243987 is an equidigital number, since it uses as much as digits as its factorization.

22423243987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 46.

The spelling of 22423243987 in words is "twenty-two billion, four hundred twenty-three million, two hundred forty-three thousand, nine hundred eighty-seven".