649830565543 has 2 divisors, whose sum is σ = 649830565544. Its totient is φ = 649830565542.

The previous prime is 649830565507. The next prime is 649830565561. The reversal of 649830565543 is 345565038946.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-649830565543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (649830566543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324915282771 + 324915282772.

It is an arithmetic number, because the mean of its divisors is an integer number (324915282772).

Almost surely, 2^649830565543 is an apocalyptic number.

649830565543 is a deficient number, since it is larger than the sum of its proper divisors (1).

649830565543 is an equidigital number, since it uses as much as digits as its factorization.

649830565543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656000, while the sum is 58.

The spelling of 649830565543 in words is "six hundred forty-nine billion, eight hundred thirty million, five hundred sixty-five thousand, five hundred forty-three".