87161343361 has 9 divisors (see below), whose sum is σ = 88248942211. Its totient is φ = 86086997752.

The previous prime is 87161343359. The next prime is 87161343377. The reversal of 87161343361 is 16334316178.

The square root of 87161343361 is 295231.

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., 10678122225 + 76483221136 = 103335^2 + 276556^2 .

It is not a de Polignac number, because 87161343361 - 2¹ = 87161343359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87161343301) 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, 24502395 + ... + 24505951.

Almost surely, 2^87161343361 is an apocalyptic number.

87161343361 is the 295231-st square number.

87161343361 is the 147616-th centered octagonal number.

It is an amenable number.

87161343361 is a deficient number, since it is larger than the sum of its proper divisors (1087598850).

87161343361 is an frugal number, since it uses more digits than its factorization.

87161343361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7280 (or 3640 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The spelling of 87161343361 in words is "eighty-seven billion, one hundred sixty-one million, three hundred forty-three thousand, three hundred sixty-one".