85857153971858 has 16 divisors (see below), whose sum is σ = 136363257338904. Its totient is φ = 40402805049600.

The previous prime is 85857153971833. The next prime is 85857153971867. The reversal of 85857153971858 is 85817935175858.

It can be written as a sum of positive squares in 4 ways, for example, as 45019980154249 + 40837173817609 = 6709693^2 + 6390397^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15060185 + ... + 19963052.

Almost surely, 2^{85857153971858} is an apocalyptic number.

85857153971858 is a deficient number, since it is larger than the sum of its proper divisors (50506103367046).

85857153971858 is a wasteful number, since it uses less digits than its factorization.

85857153971858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35095357.

The product of its digits is 3386880000, while the sum is 80.

The spelling of 85857153971858 in words is "eighty-five trillion, eight hundred fifty-seven billion, one hundred fifty-three million, nine hundred seventy-one thousand, eight hundred fifty-eight".