648678193133 has 2 divisors, whose sum is σ = 648678193134. Its totient is φ = 648678193132.

The previous prime is 648678193103. The next prime is 648678193157. The reversal of 648678193133 is 331391876846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 564028036324 + 84650156809 = 751018^2 + 290947^2 .

It is a cyclic number.

It is not a de Polignac number, because 648678193133 - 2²² = 648673998829 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648678193103) 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 as a sum of consecutive naturals, namely, 324339096566 + 324339096567.

It is an arithmetic number, because the mean of its divisors is an integer number (324339096567).

Almost surely, 2^648678193133 is an apocalyptic number.

It is an amenable number.

648678193133 is a deficient number, since it is larger than the sum of its proper divisors (1).

648678193133 is an equidigital number, since it uses as much as digits as its factorization.

648678193133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15676416, while the sum is 59.

The spelling of 648678193133 in words is "six hundred forty-eight billion, six hundred seventy-eight million, one hundred ninety-three thousand, one hundred thirty-three".