663233016420245 has 4 divisors (see below), whose sum is σ = 795879619704300. Its totient is φ = 530586413136192.

The previous prime is 663233016420223. The next prime is 663233016420323. The reversal of 663233016420245 is 542024610332366.

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 470633410763569 + 192599605656676 = 21694087^2 + 13878026^2 .

It is a cyclic number.

It is not a de Polignac number, because 663233016420245 - 2¹⁴ = 663233016403861 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 663233016420245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66323301642020 + ... + 66323301642029.

It is an arithmetic number, because the mean of its divisors is an integer number (198969904926075).

Almost surely, 2^{663233016420245} is an apocalyptic number.

It is an amenable number.

663233016420245 is a deficient number, since it is larger than the sum of its proper divisors (132646603284055).

663233016420245 is a wasteful number, since it uses less digits than its factorization.

663233016420245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132646603284054.

The product of its (nonzero) digits is 3732480, while the sum is 47.

The spelling of 663233016420245 in words is "six hundred sixty-three trillion, two hundred thirty-three billion, sixteen million, four hundred twenty thousand, two hundred forty-five".