878720218899 has 16 divisors (see below), whose sum is σ = 1184065643904. Its totient is φ = 579612297600.

The previous prime is 878720218889. The next prime is 878720218919. The reversal of 878720218899 is 998812027878.

It is not a de Polignac number, because 878720218899 - 2⁸ = 878720218643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (878720218879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2076217 + ... + 2463354.

It is an arithmetic number, because the mean of its divisors is an integer number (74004102744).

Almost surely, 2^878720218899 is an apocalyptic number.

878720218899 is a deficient number, since it is larger than the sum of its proper divisors (305345425005).

878720218899 is a wasteful number, since it uses less digits than its factorization.

878720218899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4540258.

The product of its (nonzero) digits is 65028096, while the sum is 69.

The spelling of 878720218899 in words is "eight hundred seventy-eight billion, seven hundred twenty million, two hundred eighteen thousand, eight hundred ninety-nine".