42827841816 has 64 divisors (see below), whose sum is σ = 108947635200. Its totient is φ = 14025825408.

The previous prime is 42827841779. The next prime is 42827841883. The reversal of 42827841816 is 61814872824.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2729305 + ... + 2744951.

It is an arithmetic number, because the mean of its divisors is an integer number (1702306800).

Almost surely, 2^42827841816 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 42827841816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54473817600).

42827841816 is an abundant number, since it is smaller than the sum of its proper divisors (66119793384).

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

42827841816 is a wasteful number, since it uses less digits than its factorization.

42827841816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17648 (or 17644 counting only the distinct ones).

The product of its digits is 1376256, while the sum is 51.

The spelling of 42827841816 in words is "forty-two billion, eight hundred twenty-seven million, eight hundred forty-one thousand, eight hundred sixteen".