16216381420 has 24 divisors (see below), whose sum is σ = 34090174944. Its totient is φ = 6479738496.

The previous prime is 16216381409. The next prime is 16216381427. The reversal of 16216381420 is 2418361261.

It is not an unprimeable number, because it can be changed into a prime (16216381427) 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, 406344 + ... + 444463.

It is an arithmetic number, because the mean of its divisors is an integer number (1420423956).

Almost surely, 2^16216381420 is an apocalyptic number.

16216381420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16216381420 is an abundant number, since it is smaller than the sum of its proper divisors (17873793524).

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

16216381420 is a wasteful number, since it uses less digits than its factorization.

16216381420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851769 (or 851767 counting only the distinct ones).

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

The spelling of 16216381420 in words is "sixteen billion, two hundred sixteen million, three hundred eighty-one thousand, four hundred twenty".