16220803381 has 8 divisors (see below), whose sum is σ = 16465022784. Its totient is φ = 15976646400.

The previous prime is 16220803343. The next prime is 16220803427. The reversal of 16220803381 is 18330802261.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16220803381 - 2¹⁹ = 16220279093 is a prime.

It is a super-2 number, since 2×16220803381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16220803321) 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 7 ways as a sum of consecutive naturals, for example, 993621 + ... + 1009813.

It is an arithmetic number, because the mean of its divisors is an integer number (2058127848).

Almost surely, 2^16220803381 is an apocalyptic number.

It is an amenable number.

16220803381 is a deficient number, since it is larger than the sum of its proper divisors (244219403).

16220803381 is a wasteful number, since it uses less digits than its factorization.

16220803381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31211.

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 16220803381 in words is "sixteen billion, two hundred twenty million, eight hundred three thousand, three hundred eighty-one".