17643323053 has 8 divisors (see below), whose sum is σ = 18123106680. Its totient is φ = 17163694080.

The previous prime is 17643323051. The next prime is 17643323057. The reversal of 17643323053 is 35032334671.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9196426404 + 8446896649 = 95898^2 + 91907^2 .

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 17643323053 - 2¹ = 17643323051 is a prime.

It is a super-2 number, since 2×17643323053² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17643323051) 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, 214893 + ... + 285421.

It is an arithmetic number, because the mean of its divisors is an integer number (2265388335).

Almost surely, 2^17643323053 is an apocalyptic number.

It is an amenable number.

17643323053 is a deficient number, since it is larger than the sum of its proper divisors (479783627).

17643323053 is an equidigital number, since it uses as much as digits as its factorization.

17643323053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77327.

The product of its (nonzero) digits is 136080, while the sum is 37.

The spelling of 17643323053 in words is "seventeen billion, six hundred forty-three million, three hundred twenty-three thousand, fifty-three".