42455647612 has 72 divisors (see below), whose sum is σ = 91670128704. Its totient is φ = 17095292928.

The previous prime is 42455647523. The next prime is 42455647613. The reversal of 42455647612 is 21674655424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42455647613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1965133 + ... + 1986619.

It is an arithmetic number, because the mean of its divisors is an integer number (1273196232).

Almost surely, 2^42455647612 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 42455647612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45835064352).

42455647612 is an abundant number, since it is smaller than the sum of its proper divisors (49214481092).

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

42455647612 is a wasteful number, since it uses less digits than its factorization.

42455647612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22115 (or 22106 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 46.

The spelling of 42455647612 in words is "forty-two billion, four hundred fifty-five million, six hundred forty-seven thousand, six hundred twelve".