16821796210 has 32 divisors (see below), whose sum is σ = 30816443520. Its totient is φ = 6609516672.

The previous prime is 16821796207. The next prime is 16821796213. The reversal of 16821796210 is 1269712861.

It is an interprime number because it is at equal distance from previous prime (16821796207) and next prime (16821796213).

It is a super-3 number, since 3×16821796210³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (16821796213) 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, 796102 + ... + 816958.

It is an arithmetic number, because the mean of its divisors is an integer number (963013860).

Almost surely, 2^16821796210 is an apocalyptic number.

16821796210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16821796210 is a deficient number, since it is larger than the sum of its proper divisors (13994647310).

16821796210 is a wasteful number, since it uses less digits than its factorization.

16821796210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22290.

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 16821796210 in words is "sixteen billion, eight hundred twenty-one million, seven hundred ninety-six thousand, two hundred ten".