64958095849 has 4 divisors (see below), whose sum is σ = 65074717764. Its totient is φ = 64841473936.

The previous prime is 64958095847. The next prime is 64958095859. The reversal of 64958095849 is 94859085946.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94859085946 = 2 ⋅47429542973.

It can be written as a sum of positive squares in 2 ways, for example, as 8993677225 + 55964418624 = 94835^2 + 236568^2 .

It is a cyclic number.

It is not a de Polignac number, because 64958095849 - 2¹ = 64958095847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64958095847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58310122 + ... + 58311235.

It is an arithmetic number, because the mean of its divisors is an integer number (16268679441).

Almost surely, 2^64958095849 is an apocalyptic number.

It is an amenable number.

64958095849 is a deficient number, since it is larger than the sum of its proper divisors (116621915).

64958095849 is a wasteful number, since it uses less digits than its factorization.

64958095849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116621914.

The product of its (nonzero) digits is 111974400, while the sum is 67.

The spelling of 64958095849 in words is "sixty-four billion, nine hundred fifty-eight million, ninety-five thousand, eight hundred forty-nine".