78827872887 has 36 divisors (see below), whose sum is σ = 117123126120. Its totient is φ = 51087868992.

The previous prime is 78827872867. The next prime is 78827872909.

78827872887 is a `hidden beast` number, since 78 + 8 + 278 + 7 + 288 + 7 = 666.

78827872887 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78827872887 - 2³² = 74532905591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78827872867) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20857564 + ... + 20861342.

It is an arithmetic number, because the mean of its divisors is an integer number (3253420170).

Almost surely, 2^78827872887 is an apocalyptic number.

78827872887 is a deficient number, since it is larger than the sum of its proper divisors (38295253233).

78827872887 is a wasteful number, since it uses less digits than its factorization.

78827872887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5552 (or 5512 counting only the distinct ones).

The product of its digits is 314703872, while the sum is 72.

The spelling of 78827872887 in words is "seventy-eight billion, eight hundred twenty-seven million, eight hundred seventy-two thousand, eight hundred eighty-seven".