173145887146 has 8 divisors (see below), whose sum is σ = 259806671460. Its totient is φ = 86543663328.

The previous prime is 173145887129. The next prime is 173145887147. The reversal of 173145887146 is 641788541371.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 131330136025 + 41815751121 = 362395^2 + 204489^2 .

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

It is not an unprimeable number, because it can be changed into a prime (173145887147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14632731 + ... + 14644558.

Almost surely, 2^173145887146 is an apocalyptic number.

173145887146 is a deficient number, since it is larger than the sum of its proper divisors (86660784314).

173145887146 is a wasteful number, since it uses less digits than its factorization.

173145887146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29280248.

The product of its digits is 4515840, while the sum is 55.

The spelling of 173145887146 in words is "one hundred seventy-three billion, one hundred forty-five million, eight hundred eighty-seven thousand, one hundred forty-six".