999337891624072 has 128 divisors (see below), whose sum is σ = 2583810690128640. Its totient is φ = 349688664622080.

The previous prime is 999337891624067. The next prime is 999337891624087. The reversal of 999337891624072 is 270426198733999.

It is a happy number.

It is a super-3 number, since 3×999337891624072³ (a number of 46 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 999337891623983 and 999337891624001.

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, 1686088083 + ... + 1686680674.

It is an arithmetic number, because the mean of its divisors is an integer number (20186021016630).

Almost surely, 2^{999337891624072} is an apocalyptic number.

It is an amenable number.

999337891624072 is an abundant number, since it is smaller than the sum of its proper divisors (1584472798504568).

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

999337891624072 is a wasteful number, since it uses less digits than its factorization.

999337891624072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3372768831 (or 3372768827 counting only the distinct ones).

The product of its (nonzero) digits is 2222131968, while the sum is 79.

The spelling of 999337891624072 in words is "nine hundred ninety-nine trillion, three hundred thirty-seven billion, eight hundred ninety-one million, six hundred twenty-four thousand, seventy-two".