16006206321 has 24 divisors (see below), whose sum is σ = 27334082880. Its totient is φ = 8831009376.

The previous prime is 16006206301. The next prime is 16006206343. The reversal of 16006206321 is 12360260061.

16006206321 is a `hidden beast` number, since 1 + 6 + 0 + 0 + 6 + 20 + 632 + 1 = 666.

It is not a de Polignac number, because 16006206321 - 2¹¹ = 16006204273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16006206301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4378635 + ... + 4382288.

It is an arithmetic number, because the mean of its divisors is an integer number (1138920120).

Almost surely, 2^16006206321 is an apocalyptic number.

It is an amenable number.

16006206321 is a deficient number, since it is larger than the sum of its proper divisors (11327876559).

16006206321 is a wasteful number, since it uses less digits than its factorization.

16006206321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8760965 (or 8760962 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 16006206321 its reverse (12360260061), we get a palindrome (28366466382).

The spelling of 16006206321 in words is "sixteen billion, six million, two hundred six thousand, three hundred twenty-one".