78587133127867 has 8 divisors (see below), whose sum is σ = 96722625388256. Its totient is φ = 62178830606592.

The previous prime is 78587133127859. The next prime is 78587133128003. The reversal of 78587133127867 is 76872133178587.

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

It is not a de Polignac number, because 78587133127867 - 2³ = 78587133127859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78587133127867.

It is not an unprimeable number, because it can be changed into a prime (78587133127067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431797434678 + ... + 431797434859.

It is an arithmetic number, because the mean of its divisors is an integer number (12090328173532).

Almost surely, 2^{78587133127867} is an apocalyptic number.

78587133127867 is a deficient number, since it is larger than the sum of its proper divisors (18135492260389).

78587133127867 is a wasteful number, since it uses less digits than its factorization.

78587133127867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863594869557.

The product of its digits is 663828480, while the sum is 73.

The spelling of 78587133127867 in words is "seventy-eight trillion, five hundred eighty-seven billion, one hundred thirty-three million, one hundred twenty-seven thousand, eight hundred sixty-seven".