16221933487736 has 8 divisors (see below), whose sum is σ = 30416125289520. Its totient is φ = 8110966743864.

The previous prime is 16221933487709. The next prime is 16221933487787. The reversal of 16221933487736 is 63778433912261.

It is a happy number.

16221933487736 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×16221933487736² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1013870842976 + ... + 1013870842991.

It is an arithmetic number, because the mean of its divisors is an integer number (3802015661190).

Almost surely, 2^{16221933487736} is an apocalyptic number.

It is an amenable number.

16221933487736 is a deficient number, since it is larger than the sum of its proper divisors (14194191801784).

16221933487736 is a wasteful number, since it uses less digits than its factorization.

16221933487736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027741685973 (or 2027741685969 counting only the distinct ones).

The product of its digits is 54867456, while the sum is 62.

The spelling of 16221933487736 in words is "sixteen trillion, two hundred twenty-one billion, nine hundred thirty-three million, four hundred eighty-seven thousand, seven hundred thirty-six".