42718221852 has 12 divisors (see below), whose sum is σ = 99675851016. Its totient is φ = 14239407280.

The previous prime is 42718221823. The next prime is 42718221883. The reversal of 42718221852 is 25812281724.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 1779925899 + ... + 1779925922.

It is an arithmetic number, because the mean of its divisors is an integer number (8306320918).

Almost surely, 2^42718221852 is an apocalyptic number.

It is an amenable number.

42718221852 is an abundant number, since it is smaller than the sum of its proper divisors (56957629164).

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

42718221852 is a wasteful number, since it uses less digits than its factorization.

42718221852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3559851828 (or 3559851826 counting only the distinct ones).

The product of its digits is 143360, while the sum is 42.

The spelling of 42718221852 in words is "forty-two billion, seven hundred eighteen million, two hundred twenty-one thousand, eight hundred fifty-two".