173530612481906 has 16 divisors (see below), whose sum is σ = 269489321366040. Its totient is φ = 83705676055680.

The previous prime is 173530612481887. The next prime is 173530612481909. The reversal of 173530612481906 is 609184216035371.

It can be written as a sum of positive squares in 4 ways, for example, as 114847980391225 + 58682632090681 = 10716715^2 + 7660459^2 .

It is a super-2 number, since 2×173530612481906² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (173530612481909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1209268235 + ... + 1209411726.

It is a 1-persistent number, because it is pandigital, but 2⋅173530612481906 = 347061224963812 is not.

Almost surely, 2^{173530612481906} is an apocalyptic number.

173530612481906 is a deficient number, since it is larger than the sum of its proper divisors (95958708884134).

173530612481906 is a wasteful number, since it uses less digits than its factorization.

173530612481906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418681229.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 173530612481906 in words is "one hundred seventy-three trillion, five hundred thirty billion, six hundred twelve million, four hundred eighty-one thousand, nine hundred six".