78565056587 has 8 divisors (see below), whose sum is σ = 78693368832. Its totient is φ = 78436792000.

The previous prime is 78565056569. The next prime is 78565056599.

78565056587 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 78565056587 - 2¹⁸ = 78564794443 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78565056527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4836503 + ... + 4852719.

It is an arithmetic number, because the mean of its divisors is an integer number (9836671104).

Almost surely, 2^78565056587 is an apocalyptic number.

78565056587 is a deficient number, since it is larger than the sum of its proper divisors (128312245).

78565056587 is a wasteful number, since it uses less digits than its factorization.

78565056587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23829.

The product of its (nonzero) digits is 70560000, while the sum is 62.

The spelling of 78565056587 in words is "seventy-eight billion, five hundred sixty-five million, fifty-six thousand, five hundred eighty-seven".