87117271178 has 16 divisors (see below), whose sum is σ = 149351252544. Its totient is φ = 37334133600.

The previous prime is 87117271169. The next prime is 87117271181.

87117271178 is nontrivially palindromic in base 10.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 163526 + ... + 448302.

It is an arithmetic number, because the mean of its divisors is an integer number (9334453284).

Almost surely, 2^87117271178 is an apocalyptic number.

87117271178 is a deficient number, since it is larger than the sum of its proper divisors (62233981366).

87117271178 is a wasteful number, since it uses less digits than its factorization.

87117271178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306637.

The product of its digits is 307328, while the sum is 50.

The spelling of 87117271178 in words is "eighty-seven billion, one hundred seventeen million, two hundred seventy-one thousand, one hundred seventy-eight".