64329683897 has 2 divisors, whose sum is σ = 64329683898. Its totient is φ = 64329683896.

The previous prime is 64329683881. The next prime is 64329683987. The reversal of 64329683897 is 79838692346.

Together with next prime (64329683987) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57511713856 + 6817970041 = 239816^2 + 82571^2 .

It is a cyclic number.

It is not a de Polignac number, because 64329683897 - 2⁴ = 64329683881 is a prime.

It is a super-2 number, since 2×64329683897² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64329682897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32164841948 + 32164841949.

It is an arithmetic number, because the mean of its divisors is an integer number (32164841949).

Almost surely, 2^64329683897 is an apocalyptic number.

It is an amenable number.

64329683897 is a deficient number, since it is larger than the sum of its proper divisors (1).

64329683897 is an equidigital number, since it uses as much as digits as its factorization.

64329683897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94058496, while the sum is 65.

The spelling of 64329683897 in words is "sixty-four billion, three hundred twenty-nine million, six hundred eighty-three thousand, eight hundred ninety-seven".