87086173556 has 24 divisors (see below), whose sum is σ = 159042550464. Its totient is φ = 41645816960.

The previous prime is 87086173541. The next prime is 87086173567. The reversal of 87086173556 is 65537168078.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1029551 + ... + 1110921.

It is an arithmetic number, because the mean of its divisors is an integer number (6626772936).

Almost surely, 2^87086173556 is an apocalyptic number.

It is an amenable number.

87086173556 is a deficient number, since it is larger than the sum of its proper divisors (71956376908).

87086173556 is a wasteful number, since it uses less digits than its factorization.

87086173556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93031 (or 93029 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 56.

The spelling of 87086173556 in words is "eighty-seven billion, eighty-six million, one hundred seventy-three thousand, five hundred fifty-six".