663248373233 has 4 divisors (see below), whose sum is σ = 681174004980. Its totient is φ = 645322741488.

The previous prime is 663248373199. The next prime is 663248373253. The reversal of 663248373233 is 332373842366.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 409865002849 + 253383370384 = 640207^2 + 503372^2 .

It is a cyclic number.

It is not a de Polignac number, because 663248373233 - 2⁸ = 663248372977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663248373253) 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, 8962815818 + ... + 8962815891.

It is an arithmetic number, because the mean of its divisors is an integer number (170293501245).

Almost surely, 2^663248373233 is an apocalyptic number.

It is an amenable number.

663248373233 is a deficient number, since it is larger than the sum of its proper divisors (17925631747).

663248373233 is a wasteful number, since it uses less digits than its factorization.

663248373233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17925631746.

The product of its digits is 7838208, while the sum is 50.

The spelling of 663248373233 in words is "six hundred sixty-three billion, two hundred forty-eight million, three hundred seventy-three thousand, two hundred thirty-three".