878772277878 has 64 divisors (see below), whose sum is σ = 2030671648512. Its totient is φ = 250560276480.

The previous prime is 878772277783. The next prime is 878772277879.

878772277878 is nontrivially palindromic in base 10.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878772277879) 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, 3979950 + ... + 4194942.

It is an arithmetic number, because the mean of its divisors is an integer number (31729244508).

Almost surely, 2^878772277878 is an apocalyptic number.

878772277878 is an abundant number, since it is smaller than the sum of its proper divisors (1151899370634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

878772277878 is a wasteful number, since it uses less digits than its factorization.

878772277878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218669.

The product of its digits is 1927561216, while the sum is 78.

The spelling of 878772277878 in words is "eight hundred seventy-eight billion, seven hundred seventy-two million, two hundred seventy-seven thousand, eight hundred seventy-eight".