173356485253081 has 27 divisors (see below), whose sum is σ = 188949935248893. Its totient is φ = 158977478930400.

The previous prime is 173356485253067. The next prime is 173356485253117. The reversal of 173356485253081 is 180352584653371.

The square root of 173356485253081 is 13166491.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 55901177470681 + 117455307782400 = 7476709^2 + 10837680^2 .

It is not a de Polignac number, because 173356485253081 - 2⁷ = 173356485252953 is a prime.

It is a super-2 number, since 2×173356485253081² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (173356485253181) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 26872804906 + ... + 26872811356.

It is an arithmetic number, because the mean of its divisors is an integer number (6998145749959).

Almost surely, 2^{173356485253081} is an apocalyptic number.

173356485253081 is the 13166491-st square number.

173356485253081 is the 6583246-th centered octagonal number.

It is an amenable number.

173356485253081 is a deficient number, since it is larger than the sum of its proper divisors (15593449995812).

173356485253081 is an frugal number, since it uses more digits than its factorization.

173356485253081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13242 (or 6621 counting only the distinct ones).

The product of its (nonzero) digits is 72576000, while the sum is 61.

The spelling of 173356485253081 in words is "one hundred seventy-three trillion, three hundred fifty-six billion, four hundred eighty-five million, two hundred fifty-three thousand, eighty-one".