988887788889 has 128 divisors (see below), whose sum is σ = 1913859870720. Its totient is φ = 437092070400.

The previous prime is 988887788843. The next prime is 988887788897.

988887788889 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 988887788889 - 2¹² = 988887784793 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 988887788796 and 988887788805.

It is not an unprimeable number, because it can be changed into a prime (988887788899) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1876899 + ... + 2345319.

It is an arithmetic number, because the mean of its divisors is an integer number (14952030240).

Almost surely, 2^988887788889 is an apocalyptic number.

It is an amenable number.

988887788889 is a deficient number, since it is larger than the sum of its proper divisors (924972081831).

988887788889 is a wasteful number, since it uses less digits than its factorization.

988887788889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468511.

The product of its digits is 66588770304, while the sum is 96.

The spelling of 988887788889 in words is "nine hundred eighty-eight billion, eight hundred eighty-seven million, seven hundred eighty-eight thousand, eight hundred eighty-nine".