988377128089 has 4 divisors (see below), whose sum is σ = 1064406137956. Its totient is φ = 912348118224.

The previous prime is 988377128051. The next prime is 988377128107. The reversal of 988377128089 is 980821773889.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50805160000 + 937571968089 = 225400^2 + 968283^2 .

It is a cyclic number.

It is not a de Polignac number, because 988377128089 - 2¹⁷ = 988376997017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (988377120089) 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 3 ways as a sum of consecutive naturals, for example, 38014504914 + ... + 38014504939.

It is an arithmetic number, because the mean of its divisors is an integer number (266101534489).

Almost surely, 2^988377128089 is an apocalyptic number.

It is an amenable number.

988377128089 is a deficient number, since it is larger than the sum of its proper divisors (76029009867).

988377128089 is a wasteful number, since it uses less digits than its factorization.

988377128089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76029009866.

The product of its (nonzero) digits is 97542144, while the sum is 70.

The spelling of 988377128089 in words is "nine hundred eighty-eight billion, three hundred seventy-seven million, one hundred twenty-eight thousand, eighty-nine".