996943142598990 has 32 divisors (see below), whose sum is σ = 2392733040302880. Its totient is φ = 265843782685824.

The previous prime is 996943142598919. The next prime is 996943142599031. The reversal of 996943142598990 is 99895241349699.

It is a super-2 number, since 2×996943142598990² (a number of 31 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 996943142598897 and 996943142598906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 481575369 + ... + 483641108.

It is an arithmetic number, because the mean of its divisors is an integer number (74772907509465).

Almost surely, 2^{996943142598990} is an apocalyptic number.

996943142598990 is an abundant number, since it is smaller than the sum of its proper divisors (1395789897703890).

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

996943142598990 is a wasteful number, since it uses less digits than its factorization.

996943142598990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965250916.

The product of its (nonzero) digits is 12244400640, while the sum is 87.

The spelling of 996943142598990 in words is "nine hundred ninety-six trillion, nine hundred forty-three billion, one hundred forty-two million, five hundred ninety-eight thousand, nine hundred ninety".