42648561061 has 4 divisors (see below), whose sum is σ = 42654592800. Its totient is φ = 42642529324.

The previous prime is 42648561047. The next prime is 42648561091. The reversal of 42648561061 is 16016584624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42648561061 - 2¹⁹ = 42648036773 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42648560999 and 42648561017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42648561001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3005251 + ... + 3019408.

It is an arithmetic number, because the mean of its divisors is an integer number (10663648200).

Almost surely, 2^42648561061 is an apocalyptic number.

It is an amenable number.

42648561061 is a deficient number, since it is larger than the sum of its proper divisors (6031739).

42648561061 is an equidigital number, since it uses as much as digits as its factorization.

42648561061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6031738.

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 42648561061 in words is "forty-two billion, six hundred forty-eight million, five hundred sixty-one thousand, sixty-one".