42556566587 has 4 divisors (see below), whose sum is σ = 42564713496. Its totient is φ = 42548419680.

The previous prime is 42556566527. The next prime is 42556566593. The reversal of 42556566587 is 78566565524.

42556566587 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 is a cyclic number.

It is not a de Polignac number, because 42556566587 - 2¹⁴ = 42556550203 is a prime.

It is a super-2 number, since 2×42556566587² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42556566527) 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, 4065614 + ... + 4076067.

It is an arithmetic number, because the mean of its divisors is an integer number (10641178374).

Almost surely, 2^42556566587 is an apocalyptic number.

42556566587 is a deficient number, since it is larger than the sum of its proper divisors (8146909).

42556566587 is an equidigital number, since it uses as much as digits as its factorization.

42556566587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8146908.

The product of its digits is 60480000, while the sum is 59.

The spelling of 42556566587 in words is "forty-two billion, five hundred fifty-six million, five hundred sixty-six thousand, five hundred eighty-seven".