1600005000021 has 8 divisors (see below), whose sum is σ = 2140199615424. Its totient is φ = 1063240192320.

The previous prime is 1600005000019. The next prime is 1600005000037. The reversal of 1600005000021 is 1200005000061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1600005000021 - 2¹ = 1600005000019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1600005080021) by changing a digit.

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, 857450836 + ... + 857452701.

It is an arithmetic number, because the mean of its divisors is an integer number (267524951928).

Almost surely, 2^{1600005000021} is an apocalyptic number.

It is an amenable number.

1600005000021 is a deficient number, since it is larger than the sum of its proper divisors (540194615403).

1600005000021 is a wasteful number, since it uses less digits than its factorization.

1600005000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714903851.

The product of its (nonzero) digits is 60, while the sum is 15.

The spelling of 1600005000021 in words is "one trillion, six hundred billion, five million, twenty-one", and thus it is an aban number.