83542786512 has 80 divisors (see below), whose sum is σ = 221334405120. Its totient is φ = 27140880256.

The previous prime is 83542786501. The next prime is 83542786589. The reversal of 83542786512 is 21568724538.

It is a super-2 number, since 2×83542786512² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 461713 + ... + 616655.

It is an arithmetic number, because the mean of its divisors is an integer number (2766680064).

Almost surely, 2^83542786512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83542786512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110667202560).

83542786512 is an abundant number, since it is smaller than the sum of its proper divisors (137791618608).

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

83542786512 is a wasteful number, since it uses less digits than its factorization.

83542786512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155240 (or 155234 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 51.

The spelling of 83542786512 in words is "eighty-three billion, five hundred forty-two million, seven hundred eighty-six thousand, five hundred twelve".