648802810739 has 2 divisors, whose sum is σ = 648802810740. Its totient is φ = 648802810738.

The previous prime is 648802810699. The next prime is 648802810741. The reversal of 648802810739 is 937018208846.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-648802810739 is a prime.

It is a super-2 number, since 2×648802810739² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 648802810741, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (648802810339) 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, 324401405369 + 324401405370.

It is an arithmetic number, because the mean of its divisors is an integer number (324401405370).

Almost surely, 2^648802810739 is an apocalyptic number.

648802810739 is a deficient number, since it is larger than the sum of its proper divisors (1).

648802810739 is an equidigital number, since it uses as much as digits as its factorization.

648802810739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4644864, while the sum is 56.

It can be divided in two parts, 648802 and 810739, that added together give a palindrome (1459541).

The spelling of 648802810739 in words is "six hundred forty-eight billion, eight hundred two million, eight hundred ten thousand, seven hundred thirty-nine".