995721983872 has 64 divisors (see below), whose sum is σ = 2473140666240. Its totient is φ = 387943626240.

The previous prime is 995721983843. The next prime is 995721983891. The reversal of 995721983872 is 278389127599.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×995721983872² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 50503638 + ... + 50523349.

It is an arithmetic number, because the mean of its divisors is an integer number (38642822910).

Almost surely, 2^995721983872 is an apocalyptic number.

It is an amenable number.

995721983872 is an abundant number, since it is smaller than the sum of its proper divisors (1477418682368).

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

995721983872 is a wasteful number, since it uses less digits than its factorization.

995721983872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101027019 (or 101027007 counting only the distinct ones).

The product of its digits is 137168640, while the sum is 70.

The spelling of 995721983872 in words is "nine hundred ninety-five billion, seven hundred twenty-one million, nine hundred eighty-three thousand, eight hundred seventy-two".