663235421152613 has 8 divisors (see below), whose sum is σ = 708238047060480. Its totient is φ = 619708291176240.

The previous prime is 663235421152597. The next prime is 663235421152651. The reversal of 663235421152613 is 316251124532366.

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 663235421152613 - 2⁴ = 663235421152597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663235421158613) 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, 368873981945 + ... + 368873983742.

It is an arithmetic number, because the mean of its divisors is an integer number (88529755882560).

Almost surely, 2^{663235421152613} is an apocalyptic number.

It is an amenable number.

663235421152613 is a deficient number, since it is larger than the sum of its proper divisors (45002625907867).

663235421152613 is a wasteful number, since it uses less digits than its factorization.

663235421152613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737747965747.

The product of its digits is 4665600, while the sum is 50.

Adding to 663235421152613 its reverse (316251124532366), we get a palindrome (979486545684979).

The spelling of 663235421152613 in words is "six hundred sixty-three trillion, two hundred thirty-five billion, four hundred twenty-one million, one hundred fifty-two thousand, six hundred thirteen".