423055343987 has 2 divisors, whose sum is σ = 423055343988. Its totient is φ = 423055343986.

The previous prime is 423055343983. The next prime is 423055344001. The reversal of 423055343987 is 789343550324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423055343987 - 2² = 423055343983 is a prime.

It is not a weakly prime, because it can be changed into another prime (423055343983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211527671993 + 211527671994.

It is an arithmetic number, because the mean of its divisors is an integer number (211527671994).

Almost surely, 2^423055343987 is an apocalyptic number.

423055343987 is a deficient number, since it is larger than the sum of its proper divisors (1).

423055343987 is an equidigital number, since it uses as much as digits as its factorization.

423055343987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10886400, while the sum is 53.

The spelling of 423055343987 in words is "four hundred twenty-three billion, fifty-five million, three hundred forty-three thousand, nine hundred eighty-seven".