64848606989 has 2 divisors, whose sum is σ = 64848606990. Its totient is φ = 64848606988.

The previous prime is 64848606959. The next prime is 64848607007. The reversal of 64848606989 is 98960684846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51494955625 + 13353651364 = 226925^2 + 115558^2 .

It is a cyclic number.

It is not a de Polignac number, because 64848606989 - 2³² = 60553639693 is a prime.

It is a super-2 number, since 2×64848606989² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64848606919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32424303494 + 32424303495.

It is an arithmetic number, because the mean of its divisors is an integer number (32424303495).

Almost surely, 2^64848606989 is an apocalyptic number.

It is an amenable number.

64848606989 is a deficient number, since it is larger than the sum of its proper divisors (1).

64848606989 is an equidigital number, since it uses as much as digits as its factorization.

64848606989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 143327232, while the sum is 68.

The spelling of 64848606989 in words is "sixty-four billion, eight hundred forty-eight million, six hundred six thousand, nine hundred eighty-nine".