42867817872 has 80 divisors (see below), whose sum is σ = 121239650880. Its totient is φ = 12943974400.

The previous prime is 42867817849. The next prime is 42867817873. The reversal of 42867817872 is 27871876824.

It is not an unprimeable number, because it can be changed into a prime (42867817873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3904 + ... + 292832.

It is an arithmetic number, because the mean of its divisors is an integer number (1515495636).

Almost surely, 2^42867817872 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 42867817872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60619825440).

42867817872 is an abundant number, since it is smaller than the sum of its proper divisors (78371833008).

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

42867817872 is a wasteful number, since it uses less digits than its factorization.

42867817872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289232 (or 289226 counting only the distinct ones).

The product of its digits is 16859136, while the sum is 60.

The spelling of 42867817872 in words is "forty-two billion, eight hundred sixty-seven million, eight hundred seventeen thousand, eight hundred seventy-two".