64173089813 has 8 divisors (see below), whose sum is σ = 73406341632. Its totient is φ = 54956254896.

The previous prime is 64173089777. The next prime is 64173089839. The reversal of 64173089813 is 31898037146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64173089813 - 2⁶ = 64173089749 is a prime.

It is a super-2 number, since 2×64173089813² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64173089213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4095845 + ... + 4111482.

It is an arithmetic number, because the mean of its divisors is an integer number (9175792704).

Almost surely, 2^64173089813 is an apocalyptic number.

It is an amenable number.

64173089813 is a deficient number, since it is larger than the sum of its proper divisors (9233251819).

64173089813 is a wasteful number, since it uses less digits than its factorization.

64173089813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8208451.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 64173089813 in words is "sixty-four billion, one hundred seventy-three million, eighty-nine thousand, eight hundred thirteen".