85875657858 has 12 divisors (see below), whose sum is σ = 186063925398. Its totient is φ = 28625219280.

The previous prime is 85875657839. The next prime is 85875657859.

It is a happy number.

85875657858 is a `hidden beast` number, since 8 + 5 + 8 + 7 + 565 + 7 + 8 + 58 = 666.

85875657858 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 63112995729 + 22762662129 = 251223^2 + 150873^2 .

It is a super-2 number, since 2×85875657858² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85875657859) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2385434923 + ... + 2385434958.

Almost surely, 2^85875657858 is an apocalyptic number.

85875657858 is an abundant number, since it is smaller than the sum of its proper divisors (100188267540).

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

85875657858 is a wasteful number, since it uses less digits than its factorization.

85875657858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4770869889 (or 4770869886 counting only the distinct ones).

The product of its digits is 752640000, while the sum is 72.

The spelling of 85875657858 in words is "eighty-five billion, eight hundred seventy-five million, six hundred fifty-seven thousand, eight hundred fifty-eight".