671834787890176 has 33 divisors (see below), whose sum is σ = 1343015145178021. Its totient is φ = 335916979228672.

The previous prime is 671834787890159. The next prime is 671834787890209. The reversal of 671834787890176 is 671098787438176.

The square root of 671834787890176 is 25919776.

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

It can be written as a sum of positive squares in only one way, i.e., 630861679641600 + 40973108248576 = 25116960^2 + 6401024^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 671834787890176.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 829027836 + ... + 829837828.

Almost surely, 2^{671834787890176} is an apocalyptic number.

671834787890176 is the 25919776-th square number.

It is an amenable number.

671834787890176 is a deficient number, since it is larger than the sum of its proper divisors (671180357287845).

671834787890176 is an frugal number, since it uses more digits than its factorization.

671834787890176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620006 (or 809995 counting only the distinct ones).

The product of its (nonzero) digits is 4779565056, while the sum is 82.

The spelling of 671834787890176 in words is "six hundred seventy-one trillion, eight hundred thirty-four billion, seven hundred eighty-seven million, eight hundred ninety thousand, one hundred seventy-six".