663204330431 has 8 divisors (see below), whose sum is σ = 681150658464. Its totient is φ = 645259154400.

The previous prime is 663204330413. The next prime is 663204330433. The reversal of 663204330431 is 134033402366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 663204330431 - 2¹⁰ = 663204329407 is a prime.

It is a super-2 number, since 2×663204330431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 663204330391 and 663204330400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663204330433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 950006 + ... + 1492956.

It is an arithmetic number, because the mean of its divisors is an integer number (85143832308).

Almost surely, 2^663204330431 is an apocalyptic number.

663204330431 is a deficient number, since it is larger than the sum of its proper divisors (17946328033).

663204330431 is a wasteful number, since it uses less digits than its factorization.

663204330431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576001.

The product of its (nonzero) digits is 93312, while the sum is 35.

Adding to 663204330431 its reverse (134033402366), we get a palindrome (797237732797).

The spelling of 663204330431 in words is "six hundred sixty-three billion, two hundred four million, three hundred thirty thousand, four hundred thirty-one".