6000021000040 has 16 divisors (see below), whose sum is σ = 13500047250180. Its totient is φ = 2400008400000.

The previous prime is 6000021000011. The next prime is 6000021000053. The reversal of 6000021000040 is 400001200006.

It can be written as a sum of positive squares in 2 ways, for example, as 5903510121796 + 96510878244 = 2429714^2 + 310662^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75000262461 + ... + 75000262540.

Almost surely, 2^{6000021000040} is an apocalyptic number.

It is an amenable number.

6000021000040 is an abundant number, since it is smaller than the sum of its proper divisors (7500026250140).

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

6000021000040 is a wasteful number, since it uses less digits than its factorization.

6000021000040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150000525012 (or 150000525008 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 6000021000040 its reverse (400001200006), we get a palindrome (6400022200046).

The spelling of 6000021000040 in words is "six trillion, twenty-one million, forty", and thus it is an aban number and an uban number.