42858985780 has 96 divisors (see below), whose sum is σ = 97971558048. Its totient is φ = 15654912000.

The previous prime is 42858985751. The next prime is 42858985781. The reversal of 42858985780 is 8758985824.

42858985780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 16 ways, for example, as 23914766736 + 18944219044 = 154644^2 + 137638^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42858985781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20594340 + ... + 20596420.

It is an arithmetic number, because the mean of its divisors is an integer number (1020537063).

Almost surely, 2^42858985780 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 42858985780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48985779024).

42858985780 is an abundant number, since it is smaller than the sum of its proper divisors (55112572268).

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

42858985780 is a wasteful number, since it uses less digits than its factorization.

42858985780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2917 (or 2915 counting only the distinct ones).

The product of its (nonzero) digits is 51609600, while the sum is 64.

The spelling of 42858985780 in words is "forty-two billion, eight hundred fifty-eight million, nine hundred eighty-five thousand, seven hundred eighty".