877777788888 has 384 divisors, whose sum is σ = 3278197278720. Its totient is φ = 204767585280.

The previous prime is 877777788827. The next prime is 877777788907. The reversal of 877777788888 is 888887777778.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 877777788798 and 877777788807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2502081 + ... + 2831247.

It is an arithmetic number, because the mean of its divisors is an integer number (8536972080).

Almost surely, 2^877777788888 is an apocalyptic number.

877777788888 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 877777788888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1639098639360).

877777788888 is an abundant number, since it is smaller than the sum of its proper divisors (2400419489832).

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

877777788888 is a wasteful number, since it uses less digits than its factorization.

877777788888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329247 (or 329240 counting only the distinct ones).

The product of its digits is 30840979456, while the sum is 90.

The spelling of 877777788888 in words is "eight hundred seventy-seven billion, seven hundred seventy-seven million, seven hundred eighty-eight thousand, eight hundred eighty-eight".