42544442887 has 4 divisors (see below), whose sum is σ = 42545050576. Its totient is φ = 42543835200.

The previous prime is 42544442849. The next prime is 42544442891. The reversal of 42544442887 is 78824444524.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42544442887 - 2¹⁵ = 42544410119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42544452887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182739 + ... + 344212.

It is an arithmetic number, because the mean of its divisors is an integer number (10636262644).

Almost surely, 2^42544442887 is an apocalyptic number.

42544442887 is a deficient number, since it is larger than the sum of its proper divisors (607689).

42544442887 is an equidigital number, since it uses as much as digits as its factorization.

42544442887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607688.

The product of its digits is 9175040, while the sum is 52.

The spelling of 42544442887 in words is "forty-two billion, five hundred forty-four million, four hundred forty-two thousand, eight hundred eighty-seven".