42443855081 has 8 divisors (see below), whose sum is σ = 42848979360. Its totient is φ = 42039248832.

The previous prime is 42443855063. The next prime is 42443855093. The reversal of 42443855081 is 18055834424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42443855081 - 2⁶ = 42443855017 is a prime.

It is a super-3 number, since 3×42443855081³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42443875081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36146 + ... + 293588.

It is an arithmetic number, because the mean of its divisors is an integer number (5356122420).

Almost surely, 2^42443855081 is an apocalyptic number.

It is an amenable number.

42443855081 is a deficient number, since it is larger than the sum of its proper divisors (405124279).

42443855081 is a wasteful number, since it uses less digits than its factorization.

42443855081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259015.

The product of its (nonzero) digits is 614400, while the sum is 44.

The spelling of 42443855081 in words is "forty-two billion, four hundred forty-three million, eight hundred fifty-five thousand, eighty-one".