649433275093 has 2 divisors, whose sum is σ = 649433275094. Its totient is φ = 649433275092.

The previous prime is 649433275081. The next prime is 649433275147. The reversal of 649433275093 is 390572334946.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 392579939844 + 256853335249 = 626562^2 + 506807^2 .

It is a cyclic number.

It is not a de Polignac number, because 649433275093 - 2⁵ = 649433275061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (649433275013) 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, 324716637546 + 324716637547.

It is an arithmetic number, because the mean of its divisors is an integer number (324716637547).

Almost surely, 2^649433275093 is an apocalyptic number.

It is an amenable number.

649433275093 is a deficient number, since it is larger than the sum of its proper divisors (1).

649433275093 is an equidigital number, since it uses as much as digits as its factorization.

649433275093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14696640, while the sum is 55.

The spelling of 649433275093 in words is "six hundred forty-nine billion, four hundred thirty-three million, two hundred seventy-five thousand, ninety-three".