83812642818 has 32 divisors (see below), whose sum is σ = 170067019392. Its totient is φ = 27530966400.

The previous prime is 83812642817. The next prime is 83812642867. The reversal of 83812642818 is 81824621838.

It is a super-2 number, since 2×83812642818² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (83812642817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 871488 + ... + 962868.

It is an arithmetic number, because the mean of its divisors is an integer number (5314594356).

Almost surely, 2^83812642818 is an apocalyptic number.

83812642818 is an abundant number, since it is smaller than the sum of its proper divisors (86254376574).

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

83812642818 is a wasteful number, since it uses less digits than its factorization.

83812642818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93610.

The product of its digits is 1179648, while the sum is 51.

The spelling of 83812642818 in words is "eighty-three billion, eight hundred twelve million, six hundred forty-two thousand, eight hundred eighteen".