64329441187181 has 2 divisors, whose sum is σ = 64329441187182. Its totient is φ = 64329441187180.

The previous prime is 64329441187117. The next prime is 64329441187217. The reversal of 64329441187181 is 18178114492346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52992139384900 + 11337301802281 = 7279570^2 + 3367091^2 .

It is a cyclic number.

It is not a de Polignac number, because 64329441187181 - 2⁶ = 64329441187117 is a prime.

It is a super-2 number, since 2×64329441187181² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64329441187181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64329441187381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32164720593590 + 32164720593591.

It is an arithmetic number, because the mean of its divisors is an integer number (32164720593591).

Almost surely, 2^{64329441187181} is an apocalyptic number.

It is an amenable number.

64329441187181 is a deficient number, since it is larger than the sum of its proper divisors (1).

64329441187181 is an equidigital number, since it uses as much as digits as its factorization.

64329441187181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9289728, while the sum is 59.

The spelling of 64329441187181 in words is "sixty-four trillion, three hundred twenty-nine billion, four hundred forty-one million, one hundred eighty-seven thousand, one hundred eighty-one".