173842152881 has 4 divisors (see below), whose sum is σ = 184068161892. Its totient is φ = 163616143872.

The previous prime is 173842152851. The next prime is 173842152923. The reversal of 173842152881 is 188251248371.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 188251248371 = 75931 ⋅2479241.

It can be written as a sum of positive squares in 2 ways, for example, as 123134319025 + 50707833856 = 350905^2 + 225184^2 .

It is a cyclic number.

It is not a de Polignac number, because 173842152881 - 2¹⁴ = 173842136497 is a prime.

It is a super-2 number, since 2×173842152881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (173842152851) 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, 5113004480 + ... + 5113004513.

It is an arithmetic number, because the mean of its divisors is an integer number (46017040473).

Almost surely, 2^173842152881 is an apocalyptic number.

It is an amenable number.

173842152881 is a deficient number, since it is larger than the sum of its proper divisors (10226009011).

173842152881 is a wasteful number, since it uses less digits than its factorization.

173842152881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10226009010.

The product of its digits is 860160, while the sum is 50.

The spelling of 173842152881 in words is "one hundred seventy-three billion, eight hundred forty-two million, one hundred fifty-two thousand, eight hundred eighty-one".