988687949786889 has 16 divisors (see below), whose sum is σ = 1451285063912640. Its totient is φ = 593707526141760.

The previous prime is 988687949786863. The next prime is 988687949786903.

988687949786889 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 988687949786889 - 2⁹ = 988687949786377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (988687949785889) 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, 137432294122 + ... + 137432301315.

It is an arithmetic number, because the mean of its divisors is an integer number (90705316494540).

Almost surely, 2^{988687949786889} is an apocalyptic number.

It is an amenable number.

988687949786889 is a deficient number, since it is larger than the sum of its proper divisors (462597114125751).

988687949786889 is a wasteful number, since it uses less digits than its factorization.

988687949786889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274864595560.

The product of its digits is 12135803387904, while the sum is 114.

The spelling of 988687949786889 in words is "nine hundred eighty-eight trillion, six hundred eighty-seven billion, nine hundred forty-nine million, seven hundred eighty-six thousand, eight hundred eighty-nine".