42221039616 has 208 divisors, whose sum is σ = 142955884800. Its totient is φ = 12062932992.

The previous prime is 42221039603. The next prime is 42221039621. The reversal of 42221039616 is 61693012224.

It is a happy number.

42221039616 is a `hidden beast` number, since 4 + 2 + 2 + 2 + 1 + 0 + 39 + 616 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 746875 + ... + 801413.

Almost surely, 2^42221039616 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 42221039616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71477942400).

42221039616 is an abundant number, since it is smaller than the sum of its proper divisors (100734845184).

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

42221039616 is an equidigital number, since it uses as much as digits as its factorization.

42221039616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54579 (or 54551 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 42221039616 in words is "forty-two billion, two hundred twenty-one million, thirty-nine thousand, six hundred sixteen".