271838147161 has 27 divisors (see below), whose sum is σ = 318628283103. Its totient is φ = 231242901120.

The previous prime is 271838147153. The next prime is 271838147173. The reversal of 271838147161 is 161741838172.

The square root of 271838147161 is 521381.

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., 110439905625 + 161398241536 = 332325^2 + 401744^2 .

It is not a de Polignac number, because 271838147161 - 2³ = 271838147153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (271838147101) 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, 770079561 + ... + 770079913.

Almost surely, 2^271838147161 is an apocalyptic number.

271838147161 is the 521381-st square number.

271838147161 is the 260691-st centered octagonal number.

It is an amenable number.

271838147161 is a deficient number, since it is larger than the sum of its proper divisors (46790135942).

271838147161 is an frugal number, since it uses more digits than its factorization.

271838147161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142 (or 571 counting only the distinct ones).

The product of its digits is 451584, while the sum is 49.

Multiplying 271838147161 by its sum of digits (49), we get a square (13320069210889 = 3649667²).

271838147161 divided by its sum of digits (49) gives a square (5547717289 = 74483²).

The spelling of 271838147161 in words is "two hundred seventy-one billion, eight hundred thirty-eight million, one hundred forty-seven thousand, one hundred sixty-one".