648334647368253 has 24 divisors (see below), whose sum is σ = 936652311728640. Its totient is φ = 432145136348640.

The previous prime is 648334647368209. The next prime is 648334647368279. The reversal of 648334647368253 is 352863746433846.

648334647368253 is a `hidden beast` number, since 6 + 4 + 8 + 3 + 3 + 4 + 6 + 4 + 7 + 368 + 253 = 666.

It is not a de Polignac number, because 648334647368253 - 2¹⁰ = 648334647367229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648334647368293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1191977788 + ... + 1192521578.

It is an arithmetic number, because the mean of its divisors is an integer number (39027179655360).

Almost surely, 2^{648334647368253} is an apocalyptic number.

It is an amenable number.

648334647368253 is a deficient number, since it is larger than the sum of its proper divisors (288317664360387).

648334647368253 is a wasteful number, since it uses less digits than its factorization.

648334647368253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567449 (or 567446 counting only the distinct ones).

The product of its digits is 5016453120, while the sum is 72.

The spelling of 648334647368253 in words is "six hundred forty-eight trillion, three hundred thirty-four billion, six hundred forty-seven million, three hundred sixty-eight thousand, two hundred fifty-three".