813106172176 has 15 divisors (see below), whose sum is σ = 1575400196983. Its totient is φ = 406551282640.

The previous prime is 813106172159. The next prime is 813106172209. The reversal of 813106172176 is 671271601318.

The square root of 813106172176 is 901724.

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

It is a super-2 number, since 2×813106172176² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3494181 + ... + 3719611.

Almost surely, 2^813106172176 is an apocalyptic number.

813106172176 is the 901724-th square number.

It is an amenable number.

813106172176 is a deficient number, since it is larger than the sum of its proper divisors (762294024807).

813106172176 is an frugal number, since it uses more digits than its factorization.

813106172176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450870 (or 225433 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 43.

The spelling of 813106172176 in words is "eight hundred thirteen billion, one hundred six million, one hundred seventy-two thousand, one hundred seventy-six".