64733547844961 has 2 divisors, whose sum is σ = 64733547844962. Its totient is φ = 64733547844960.

The previous prime is 64733547844921. The next prime is 64733547845011. The reversal of 64733547844961 is 16944874533746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63615283894561 + 1118263950400 = 7975919^2 + 1057480^2 .

It is a cyclic number.

It is not a de Polignac number, because 64733547844961 - 2¹⁸ = 64733547582817 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (64733547844921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32366773922480 + 32366773922481.

It is an arithmetic number, because the mean of its divisors is an integer number (32366773922481).

Almost surely, 2^{64733547844961} is an apocalyptic number.

It is an amenable number.

64733547844961 is a deficient number, since it is larger than the sum of its proper divisors (1).

64733547844961 is an equidigital number, since it uses as much as digits as its factorization.

64733547844961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1463132160, while the sum is 71.

The spelling of 64733547844961 in words is "sixty-four trillion, seven hundred thirty-three billion, five hundred forty-seven million, eight hundred forty-four thousand, nine hundred sixty-one".