423631342664018 has 32 divisors (see below), whose sum is σ = 664789941273600. Its totient is φ = 202200138507136.

The previous prime is 423631342664017. The next prime is 423631342664021. The reversal of 423631342664018 is 810466243136324.

It is not an unprimeable number, because it can be changed into a prime (423631342664017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73855055 + ... + 79384077.

It is an arithmetic number, because the mean of its divisors is an integer number (20774685664800).

Almost surely, 2^{423631342664018} is an apocalyptic number.

423631342664018 is a deficient number, since it is larger than the sum of its proper divisors (241158598609582).

423631342664018 is a wasteful number, since it uses less digits than its factorization.

423631342664018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5543986.

The product of its (nonzero) digits is 11943936, while the sum is 53.

The spelling of 423631342664018 in words is "four hundred twenty-three trillion, six hundred thirty-one billion, three hundred forty-two million, six hundred sixty-four thousand, eighteen".