64849069529 has 2 divisors, whose sum is σ = 64849069530. Its totient is φ = 64849069528.

The previous prime is 64849069511. The next prime is 64849069583. The reversal of 64849069529 is 92596094846.

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., 48841000000 + 16008069529 = 221000^2 + 126523^2 .

It is a cyclic number.

It is not a de Polignac number, because 64849069529 - 2¹⁶ = 64849003993 is a prime.

It is not a weakly prime, because it can be changed into another prime (64849069429) 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, 32424534764 + 32424534765.

It is an arithmetic number, because the mean of its divisors is an integer number (32424534765).

Almost surely, 2^64849069529 is an apocalyptic number.

It is an amenable number.

64849069529 is a deficient number, since it is larger than the sum of its proper divisors (1).

64849069529 is an equidigital number, since it uses as much as digits as its factorization.

64849069529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33592320, while the sum is 62.

The spelling of 64849069529 in words is "sixty-four billion, eight hundred forty-nine million, sixty-nine thousand, five hundred twenty-nine".