471171043561 has 9 divisors (see below), whose sum is σ = 477764667639. Its totient is φ = 464667223536.

The previous prime is 471171043543. The next prime is 471171043571. The reversal of 471171043561 is 165340171174.

The square root of 471171043561 is 686419.

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., 267459637225 + 203711406336 = 517165^2 + 451344^2 .

It is not a de Polignac number, because 471171043561 - 2⁷ = 471171043433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (471171043571) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 50103886 + ... + 50113288.

It is an arithmetic number, because the mean of its divisors is an integer number (53084963071).

Almost surely, 2^471171043561 is an apocalyptic number.

471171043561 is the 686419-th square number.

471171043561 is the 343210-th centered octagonal number.

It is an amenable number.

471171043561 is a deficient number, since it is larger than the sum of its proper divisors (6593624078).

471171043561 is an frugal number, since it uses more digits than its factorization.

471171043561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18952 (or 9476 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The spelling of 471171043561 in words is "four hundred seventy-one billion, one hundred seventy-one million, forty-three thousand, five hundred sixty-one".