78586868587 has 8 divisors (see below), whose sum is σ = 81125304320. Its totient is φ = 76048643880.

The previous prime is 78586868567. The next prime is 78586868599.

78586868587 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 78586868587 - 2²³ = 78578479979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78586868537) 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, 1113988 + ... + 1182430.

It is an arithmetic number, because the mean of its divisors is an integer number (10140663040).

Almost surely, 2^78586868587 is an apocalyptic number.

78586868587 is a deficient number, since it is larger than the sum of its proper divisors (2538435733).

78586868587 is a wasteful number, since it uses less digits than its factorization.

78586868587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105513.

The product of its digits is 1445068800, while the sum is 76.

The spelling of 78586868587 in words is "seventy-eight billion, five hundred eighty-six million, eight hundred sixty-eight thousand, five hundred eighty-seven".