85678899887658 has 64 divisors (see below), whose sum is σ = 213642995576832. Its totient is φ = 22254040716480.

The previous prime is 85678899887639. The next prime is 85678899887701.

85678899887658 is nontrivially palindromic in base 10.

85678899887658 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49043535 + ... + 50760477.

It is an arithmetic number, because the mean of its divisors is an integer number (3338171805888).

Almost surely, 2^{85678899887658} is an apocalyptic number.

85678899887658 is an abundant number, since it is smaller than the sum of its proper divisors (127964095689174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85678899887658 is a wasteful number, since it uses less digits than its factorization.

85678899887658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824979.

The product of its digits is 936404582400, while the sum is 102.

The spelling of 85678899887658 in words is "eighty-five trillion, six hundred seventy-eight billion, eight hundred ninety-nine million, eight hundred eighty-seven thousand, six hundred fifty-eight".