988219898556 has 96 divisors (see below), whose sum is σ = 2669452547328. Its totient is φ = 281208744960.

The previous prime is 988219898543. The next prime is 988219898597. The reversal of 988219898556 is 655898912889.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 497046 + ... + 1491138.

It is an arithmetic number, because the mean of its divisors is an integer number (27806797368).

Almost surely, 2^988219898556 is an apocalyptic number.

It is a pronic number, being equal to 994092×994093.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 988219898556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1334726273664).

988219898556 is an abundant number, since it is smaller than the sum of its proper divisors (1681232648772).

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

988219898556 is a wasteful number, since it uses less digits than its factorization.

988219898556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994571 (or 994569 counting only the distinct ones).

The product of its digits is 895795200, while the sum is 78.

The spelling of 988219898556 in words is "nine hundred eighty-eight billion, two hundred nineteen million, eight hundred ninety-eight thousand, five hundred fifty-six".