42544411521 has 8 divisors (see below), whose sum is σ = 57227881440. Its totient is φ = 28111941312.

The previous prime is 42544411519. The next prime is 42544411523. The reversal of 42544411521 is 12511444524.

42544411521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42544411519) and next prime (42544411523).

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

It is not a de Polignac number, because 42544411521 - 2¹ = 42544411519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42544411523) 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, 62749531 + ... + 62750208.

It is an arithmetic number, because the mean of its divisors is an integer number (7153485180).

Almost surely, 2^42544411521 is an apocalyptic number.

It is an amenable number.

42544411521 is a deficient number, since it is larger than the sum of its proper divisors (14683469919).

42544411521 is a wasteful number, since it uses less digits than its factorization.

42544411521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125499855.

The product of its digits is 25600, while the sum is 33.

The spelling of 42544411521 in words is "forty-two billion, five hundred forty-four million, four hundred eleven thousand, five hundred twenty-one".