996884019558 has 160 divisors (see below), whose sum is σ = 2636207523840. Its totient is φ = 275532606720.

The previous prime is 996884019499. The next prime is 996884019613. The reversal of 996884019558 is 855910488699.

996884019558 is a `hidden beast` number, since 9 + 9 + 6 + 88 + 401 + 95 + 58 = 666.

It is a super-2 number, since 2×996884019558² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 183958173 + ... + 183963591.

It is an arithmetic number, because the mean of its divisors is an integer number (16476297024).

Almost surely, 2^996884019558 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 996884019558, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1318103761920).

996884019558 is an abundant number, since it is smaller than the sum of its proper divisors (1639323504282).

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

996884019558 is a wasteful number, since it uses less digits than its factorization.

996884019558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10704 (or 10695 counting only the distinct ones).

The product of its (nonzero) digits is 223948800, while the sum is 72.

The spelling of 996884019558 in words is "nine hundred ninety-six billion, eight hundred eighty-four million, nineteen thousand, five hundred fifty-eight".