423755645959 has 4 divisors (see below), whose sum is σ = 423760397080. Its totient is φ = 423750894840.

The previous prime is 423755645953. The next prime is 423755645981. The reversal of 423755645959 is 959546557324.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 423755645959 - 2⁹ = 423755645447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423755645959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423755645953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2239164 + ... + 2421025.

It is an arithmetic number, because the mean of its divisors is an integer number (105940099270).

Almost surely, 2^423755645959 is an apocalyptic number.

423755645959 is a deficient number, since it is larger than the sum of its proper divisors (4751121).

423755645959 is an equidigital number, since it uses as much as digits as its factorization.

423755645959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4751120.

The product of its digits is 204120000, while the sum is 64.

The spelling of 423755645959 in words is "four hundred twenty-three billion, seven hundred fifty-five million, six hundred forty-five thousand, nine hundred fifty-nine".