423631342663643 has 16 divisors (see below), whose sum is σ = 428155360936416. Its totient is φ = 419113866662400.

The previous prime is 423631342663609. The next prime is 423631342663663. The reversal of 423631342663643 is 346366243136324.

It is a cyclic number.

It is not a de Polignac number, because 423631342663643 - 2¹⁴ = 423631342647259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423631342663663) 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, 1101588371 + ... + 1101972867.

It is an arithmetic number, because the mean of its divisors is an integer number (26759710058526).

Almost surely, 2^{423631342663643} is an apocalyptic number.

423631342663643 is a deficient number, since it is larger than the sum of its proper divisors (4524018272773).

423631342663643 is a wasteful number, since it uses less digits than its factorization.

423631342663643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392974.

The product of its digits is 80621568, while the sum is 56.

Adding to 423631342663643 its reverse (346366243136324), we get a palindrome (769997585799967).

The spelling of 423631342663643 in words is "four hundred twenty-three trillion, six hundred thirty-one billion, three hundred forty-two million, six hundred sixty-three thousand, six hundred forty-three".