648327031613 has 4 divisors (see below), whose sum is σ = 648355288128. Its totient is φ = 648298775100.

The previous prime is 648327031579. The next prime is 648327031633. The reversal of 648327031613 is 316130723846.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 648327031613 - 2³⁰ = 647253289789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648327031633) 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, 14093813 + ... + 14139738.

It is an arithmetic number, because the mean of its divisors is an integer number (162088822032).

Almost surely, 2^648327031613 is an apocalyptic number.

It is an amenable number.

648327031613 is a deficient number, since it is larger than the sum of its proper divisors (28256515).

648327031613 is a wasteful number, since it uses less digits than its factorization.

648327031613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28256514.

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 648327031613 in words is "six hundred forty-eight billion, three hundred twenty-seven million, thirty-one thousand, six hundred thirteen".