16221046351 has 16 divisors (see below), whose sum is σ = 16672471200. Its totient is φ = 15775959168.

The previous prime is 16221046337. The next prime is 16221046363. The reversal of 16221046351 is 15364012261.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 16221046351 - 2²⁷ = 16086828623 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 (16221043351) 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, 5484165 + ... + 5487121.

It is an arithmetic number, because the mean of its divisors is an integer number (1042029450).

Almost surely, 2^16221046351 is an apocalyptic number.

16221046351 is a deficient number, since it is larger than the sum of its proper divisors (451424849).

16221046351 is a wasteful number, since it uses less digits than its factorization.

16221046351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3978.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 16221046351 in words is "sixteen billion, two hundred twenty-one million, forty-six thousand, three hundred fifty-one".