42218985816 has 48 divisors (see below), whose sum is σ = 130677814800. Its totient is φ = 12062567232.

The previous prime is 42218985799. The next prime is 42218985889. The reversal of 42218985816 is 61858981224.

42218985816 is a `hidden beast` number, since 42 + 2 + 18 + 9 + 8 + 581 + 6 = 666.

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 11 ways as a sum of consecutive naturals, for example, 41883411 + ... + 41884418.

It is an arithmetic number, because the mean of its divisors is an integer number (2722454475).

Almost surely, 2^42218985816 is an apocalyptic number.

It is an amenable number.

42218985816 is an abundant number, since it is smaller than the sum of its proper divisors (88458828984).

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

42218985816 is a wasteful number, since it uses less digits than its factorization.

42218985816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83767848 (or 83767841 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 54.

The spelling of 42218985816 in words is "forty-two billion, two hundred eighteen million, nine hundred eighty-five thousand, eight hundred sixteen".