85811488882878 has 32 divisors (see below), whose sum is σ = 187225870648320. Its totient is φ = 26003369813760.

The previous prime is 85811488882877. The next prime is 85811488882891. The reversal of 85811488882878 is 87828888411858.

It is a happy number.

It is a super-2 number, since 2×85811488882878² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85811488882878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85811488882871) 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 15 ways as a sum of consecutive naturals, for example, 13400238 + ... + 18740046.

It is an arithmetic number, because the mean of its divisors is an integer number (5850808457760).

Almost surely, 2^{85811488882878} is an apocalyptic number.

85811488882878 is an abundant number, since it is smaller than the sum of its proper divisors (101414381765442).

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

85811488882878 is a wasteful number, since it uses less digits than its factorization.

85811488882878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5583312.

The product of its digits is 4697620480, while the sum is 84.

The spelling of 85811488882878 in words is "eighty-five trillion, eight hundred eleven billion, four hundred eighty-eight million, eight hundred eighty-two thousand, eight hundred seventy-eight".