87112647171 has 48 divisors (see below), whose sum is σ = 145391500800. Its totient is φ = 49673352960.

The previous prime is 87112647169. The next prime is 87112647179. The reversal of 87112647171 is 17174621178.

87112647171 is a `hidden beast` number, since 87 + 11 + 26 + 471 + 71 = 666.

It is not a de Polignac number, because 87112647171 - 2¹ = 87112647169 is a prime.

It is a super-2 number, since 2×87112647171² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87112647179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6494730 + ... + 6508128.

It is an arithmetic number, because the mean of its divisors is an integer number (3028989600).

Almost surely, 2^87112647171 is an apocalyptic number.

87112647171 is a deficient number, since it is larger than the sum of its proper divisors (58278853629).

87112647171 is a wasteful number, since it uses less digits than its factorization.

87112647171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17296 (or 17293 counting only the distinct ones).

The product of its digits is 131712, while the sum is 45.

The spelling of 87112647171 in words is "eighty-seven billion, one hundred twelve million, six hundred forty-seven thousand, one hundred seventy-one".