423863018455 has 4 divisors (see below), whose sum is σ = 508635622152. Its totient is φ = 339090414760.

The previous prime is 423863018443. The next prime is 423863018521. The reversal of 423863018455 is 554810368324.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 423863018455 - 2²¹ = 423860921303 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 423863018399 and 423863018408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42386301841 + ... + 42386301850.

It is an arithmetic number, because the mean of its divisors is an integer number (127158905538).

Almost surely, 2^423863018455 is an apocalyptic number.

423863018455 is a deficient number, since it is larger than the sum of its proper divisors (84772603697).

423863018455 is an equidigital number, since it uses as much as digits as its factorization.

423863018455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84772603696.

The product of its (nonzero) digits is 2764800, while the sum is 49.

The spelling of 423863018455 in words is "four hundred twenty-three billion, eight hundred sixty-three million, eighteen thousand, four hundred fifty-five".