996480813591 has 24 divisors (see below), whose sum is σ = 1441418334720. Its totient is φ = 663371384256.

The previous prime is 996480813589. The next prime is 996480813631. The reversal of 996480813591 is 195318084699.

996480813591 is a `hidden beast` number, since 9 + 96 + 480 + 8 + 13 + 59 + 1 = 666.

It is not a de Polignac number, because 996480813591 - 2¹ = 996480813589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (996480813551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67009905 + ... + 67024773.

It is an arithmetic number, because the mean of its divisors is an integer number (60059097280).

Almost surely, 2^996480813591 is an apocalyptic number.

996480813591 is a deficient number, since it is larger than the sum of its proper divisors (444937521129).

996480813591 is a wasteful number, since it uses less digits than its factorization.

With its successor (996480813592) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (25012).

With its successor (996480813592) it forms an eRAP, since the sums of their prime factors are consecutive (25015 and 25016).

996480813591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25015 (or 25012 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 63.

The spelling of 996480813591 in words is "nine hundred ninety-six billion, four hundred eighty million, eight hundred thirteen thousand, five hundred ninety-one".