78872355327887 has 32 divisors (see below), whose sum is σ = 89019837587520. Its totient is φ = 69256045440000.

The previous prime is 78872355327839. The next prime is 78872355327901.

78872355327887 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78872355327887 - 2⁸ = 78872355327631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78872355347887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 797503013 + ... + 797601905.

It is an arithmetic number, because the mean of its divisors is an integer number (2781869924610).

Almost surely, 2^{78872355327887} is an apocalyptic number.

78872355327887 is a deficient number, since it is larger than the sum of its proper divisors (10147482259633).

78872355327887 is a wasteful number, since it uses less digits than its factorization.

78872355327887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116555.

The product of its digits is 8851046400, while the sum is 80.

The spelling of 78872355327887 in words is "seventy-eight trillion, eight hundred seventy-two billion, three hundred fifty-five million, three hundred twenty-seven thousand, eight hundred eighty-seven".