64571361241 has 2 divisors, whose sum is σ = 64571361242. Its totient is φ = 64571361240.

The previous prime is 64571361191. The next prime is 64571361271. The reversal of 64571361241 is 14216317546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35703992025 + 28867369216 = 188955^2 + 169904^2 .

It is a cyclic number.

It is not a de Polignac number, because 64571361241 - 2¹⁵ = 64571328473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64571361194 and 64571361203.

It is not a weakly prime, because it can be changed into another prime (64571361271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32285680620 + 32285680621.

It is an arithmetic number, because the mean of its divisors is an integer number (32285680621).

Almost surely, 2^64571361241 is an apocalyptic number.

It is an amenable number.

64571361241 is a deficient number, since it is larger than the sum of its proper divisors (1).

64571361241 is an equidigital number, since it uses as much as digits as its factorization.

64571361241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

Adding to 64571361241 its reverse (14216317546), we get a palindrome (78787678787).

The spelling of 64571361241 in words is "sixty-four billion, five hundred seventy-one million, three hundred sixty-one thousand, two hundred forty-one".