64512530241949 has 2 divisors, whose sum is σ = 64512530241950. Its totient is φ = 64512530241948.

The previous prime is 64512530241931. The next prime is 64512530241979. The reversal of 64512530241949 is 94914203521546.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51297538572900 + 13214991669049 = 7162230^2 + 3635243^2 .

It is a cyclic number.

It is not a de Polignac number, because 64512530241949 - 2¹¹ = 64512530239901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64512530241949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64512530241979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32256265120974 + 32256265120975.

It is an arithmetic number, because the mean of its divisors is an integer number (32256265120975).

Almost surely, 2^{64512530241949} is an apocalyptic number.

It is an amenable number.

64512530241949 is a deficient number, since it is larger than the sum of its proper divisors (1).

64512530241949 is an equidigital number, since it uses as much as digits as its factorization.

64512530241949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9331200, while the sum is 55.

The spelling of 64512530241949 in words is "sixty-four trillion, five hundred twelve billion, five hundred thirty million, two hundred forty-one thousand, nine hundred forty-nine".