888887777778 has 768 divisors, whose sum is σ = 2868203520000. Its totient is φ = 191409039360.

The previous prime is 888887777737. The next prime is 888887777783. The reversal of 888887777778 is 877777788888.

888887777778 is a nontrivial binomial coefficient, being equal to C(1333333, 2).

It is a super-2 number, since 2×888887777778² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 444665223 + ... + 444667221.

It is an arithmetic number, because the mean of its divisors is an integer number (3734640000).

Almost surely, 2^888887777778 is an apocalyptic number.

888887777778 is the 1333332-nd triangular number.

It is a practical number, because each smaller number is the sum of distinct divisors of 888887777778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1434101760000).

888887777778 is an abundant number, since it is smaller than the sum of its proper divisors (1979315742222).

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

888887777778 is a wasteful number, since it uses less digits than its factorization.

888887777778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2127 (or 2124 counting only the distinct ones).

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

The spelling of 888887777778 in words is "eight hundred eighty-eight billion, eight hundred eighty-seven million, seven hundred seventy-seven thousand, seven hundred seventy-eight".