87086173505 has 32 divisors (see below), whose sum is σ = 108201139200. Its totient is φ = 67236728832.

The previous prime is 87086173483. The next prime is 87086173511. The reversal of 87086173505 is 50537168078.

It is a cyclic number.

It is not a de Polignac number, because 87086173505 - 2¹² = 87086169409 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11624801 + ... + 11632289.

It is an arithmetic number, because the mean of its divisors is an integer number (3381285600).

Almost surely, 2^87086173505 is an apocalyptic number.

It is an amenable number.

87086173505 is a deficient number, since it is larger than the sum of its proper divisors (21114965695).

87086173505 is a wasteful number, since it uses less digits than its factorization.

87086173505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8033.

The product of its (nonzero) digits is 1411200, while the sum is 50.

The spelling of 87086173505 in words is "eighty-seven billion, eighty-six million, one hundred seventy-three thousand, five hundred five".