64532441659913 has 2 divisors, whose sum is σ = 64532441659914. Its totient is φ = 64532441659912.

The previous prime is 64532441659867. The next prime is 64532441659979. The reversal of 64532441659913 is 31995614423546.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60481931202169 + 4050510457744 = 7777013^2 + 2012588^2 .

It is a cyclic number.

It is not a de Polignac number, because 64532441659913 - 2¹⁰ = 64532441658889 is a prime.

It is not a weakly prime, because it can be changed into another prime (64532441656913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32266220829956 + 32266220829957.

It is an arithmetic number, because the mean of its divisors is an integer number (32266220829957).

Almost surely, 2^{64532441659913} is an apocalyptic number.

It is an amenable number.

64532441659913 is a deficient number, since it is larger than the sum of its proper divisors (1).

64532441659913 is an equidigital number, since it uses as much as digits as its factorization.

64532441659913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 83980800, while the sum is 62.

The spelling of 64532441659913 in words is "sixty-four trillion, five hundred thirty-two billion, four hundred forty-one million, six hundred fifty-nine thousand, nine hundred thirteen".