16221549304 has 96 divisors (see below), whose sum is σ = 32835967920. Its totient is φ = 7505472000.

The previous prime is 16221549271. The next prime is 16221549317. The reversal of 16221549304 is 40394512261.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16705539 + ... + 16706509.

Almost surely, 2^16221549304 is an apocalyptic number.

It is an amenable number.

16221549304 is an abundant number, since it is smaller than the sum of its proper divisors (16614418616).

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

16221549304 is a wasteful number, since it uses less digits than its factorization.

16221549304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133 (or 1098 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 16221549304 in words is "sixteen billion, two hundred twenty-one million, five hundred forty-nine thousand, three hundred four".