64324033481 has 2 divisors, whose sum is σ = 64324033482. Its totient is φ = 64324033480.

The previous prime is 64324033471. The next prime is 64324033517. The reversal of 64324033481 is 18433042346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36819469456 + 27504564025 = 191884^2 + 165845^2 .

It is a cyclic number.

It is not a de Polignac number, because 64324033481 - 2¹⁴ = 64324017097 is a prime.

It is a super-2 number, since 2×64324033481² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64324033471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32162016740 + 32162016741.

It is an arithmetic number, because the mean of its divisors is an integer number (32162016741).

Almost surely, 2^64324033481 is an apocalyptic number.

It is an amenable number.

64324033481 is a deficient number, since it is larger than the sum of its proper divisors (1).

64324033481 is an equidigital number, since it uses as much as digits as its factorization.

64324033481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 64324033481 in words is "sixty-four billion, three hundred twenty-four million, thirty-three thousand, four hundred eighty-one".