87081328271 has 4 divisors (see below), whose sum is σ = 99521518032. Its totient is φ = 74641138512.

The previous prime is 87081328259. The next prime is 87081328273. The reversal of 87081328271 is 17282318078.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87081328271 - 2¹⁰ = 87081327247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87081328273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6220094870 + ... + 6220094883.

It is an arithmetic number, because the mean of its divisors is an integer number (24880379508).

Almost surely, 2^87081328271 is an apocalyptic number.

87081328271 is a deficient number, since it is larger than the sum of its proper divisors (12440189761).

87081328271 is a wasteful number, since it uses less digits than its factorization.

87081328271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12440189760.

The product of its (nonzero) digits is 301056, while the sum is 47.

The spelling of 87081328271 in words is "eighty-seven billion, eighty-one million, three hundred twenty-eight thousand, two hundred seventy-one".