16017069421 has 16 divisors (see below), whose sum is σ = 16467643440. Its totient is φ = 15572643840.

The previous prime is 16017069391. The next prime is 16017069457. The reversal of 16017069421 is 12496071061.

It can be written as a sum of positive squares in 8 ways, for example, as 91891396 + 15925178025 = 9586^2 + 126195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16017069421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16017069121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2748691 + ... + 2754511.

It is an arithmetic number, because the mean of its divisors is an integer number (1029227715).

Almost surely, 2^16017069421 is an apocalyptic number.

It is an amenable number.

16017069421 is a deficient number, since it is larger than the sum of its proper divisors (450574019).

16017069421 is a wasteful number, since it uses less digits than its factorization.

16017069421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6336.

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 16017069421 in words is "sixteen billion, seventeen million, sixty-nine thousand, four hundred twenty-one".