87685555558678 has 64 divisors (see below), whose sum is σ = 165681866907648. Its totient is φ = 33809385093120.

The previous prime is 87685555558673. The next prime is 87685555558691.

87685555558678 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×87685555558678² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87685555558673) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 338918475 + ... + 339177097.

It is an arithmetic number, because the mean of its divisors is an integer number (2588779170432).

Almost surely, 2^{87685555558678} is an apocalyptic number.

87685555558678 is a deficient number, since it is larger than the sum of its proper divisors (77996311348970).

87685555558678 is a wasteful number, since it uses less digits than its factorization.

87685555558678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281437.

The product of its digits is 112896000000, while the sum is 88.

The spelling of 87685555558678 in words is "eighty-seven trillion, six hundred eighty-five billion, five hundred fifty-five million, five hundred fifty-eight thousand, six hundred seventy-eight".