64334385173 has 4 divisors (see below), whose sum is σ = 64335257280. Its totient is φ = 64333513068.

The previous prime is 64334385169. The next prime is 64334385221. The reversal of 64334385173 is 37158343346.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64334385173 - 2² = 64334385169 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64334385103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314015 + ... + 476732.

It is an arithmetic number, because the mean of its divisors is an integer number (16083814320).

Almost surely, 2^64334385173 is an apocalyptic number.

It is an amenable number.

64334385173 is a deficient number, since it is larger than the sum of its proper divisors (872107).

64334385173 is an equidigital number, since it uses as much as digits as its factorization.

64334385173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872106.

The product of its digits is 2177280, while the sum is 47.

The spelling of 64334385173 in words is "sixty-four billion, three hundred thirty-four million, three hundred eighty-five thousand, one hundred seventy-three".