173209061212 has 12 divisors (see below), whose sum is σ = 330671844216. Its totient is φ = 78731391440.

The previous prime is 173209061183. The next prime is 173209061261. The reversal of 173209061212 is 212160902371.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1968284743 + ... + 1968284830.

It is an arithmetic number, because the mean of its divisors is an integer number (27555987018).

Almost surely, 2^173209061212 is an apocalyptic number.

It is an amenable number.

173209061212 is a deficient number, since it is larger than the sum of its proper divisors (157462783004).

173209061212 is a wasteful number, since it uses less digits than its factorization.

173209061212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3936569588 (or 3936569586 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

Adding to 173209061212 its reverse (212160902371), we get a palindrome (385369963583).

The spelling of 173209061212 in words is "one hundred seventy-three billion, two hundred nine million, sixty-one thousand, two hundred twelve".