42116143561 has 4 divisors (see below), whose sum is σ = 42131203972. Its totient is φ = 42101083152.

The previous prime is 42116143541. The next prime is 42116143583. The reversal of 42116143561 is 16534161124.

42116143561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13763982400 + 28352161161 = 117320^2 + 168381^2 .

It is a cyclic number.

It is not a de Polignac number, because 42116143561 - 2⁹ = 42116143049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42116143541) 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, 7526010 + ... + 7531603.

It is an arithmetic number, because the mean of its divisors is an integer number (10532800993).

Almost surely, 2^42116143561 is an apocalyptic number.

It is an amenable number.

42116143561 is a deficient number, since it is larger than the sum of its proper divisors (15060411).

42116143561 is a wasteful number, since it uses less digits than its factorization.

42116143561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15060410.

The product of its digits is 17280, while the sum is 34.

The spelling of 42116143561 in words is "forty-two billion, one hundred sixteen million, one hundred forty-three thousand, five hundred sixty-one".