663230938479 has 4 divisors (see below), whose sum is σ = 884307917976. Its totient is φ = 442153958984.

The previous prime is 663230938471. The next prime is 663230938501. The reversal of 663230938479 is 974839032366.

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 663230938479 - 2³ = 663230938471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663230938471) 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, 110538489744 + ... + 110538489749.

It is an arithmetic number, because the mean of its divisors is an integer number (221076979494).

Almost surely, 2^663230938479 is an apocalyptic number.

663230938479 is a deficient number, since it is larger than the sum of its proper divisors (221076979497).

663230938479 is a wasteful number, since it uses less digits than its factorization.

663230938479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221076979496.

The product of its (nonzero) digits is 35271936, while the sum is 60.

The spelling of 663230938479 in words is "six hundred sixty-three billion, two hundred thirty million, nine hundred thirty-eight thousand, four hundred seventy-nine".