21466035312 has 80 divisors (see below), whose sum is σ = 57886295040. Its totient is φ = 6846681600.

The previous prime is 21466035307. The next prime is 21466035341. The reversal of 21466035312 is 21353066412.

It is a super-3 number, since 3×21466035312³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51387 + ... + 213477.

It is an arithmetic number, because the mean of its divisors is an integer number (723578688).

Almost surely, 2^21466035312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21466035312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28943147520).

21466035312 is an abundant number, since it is smaller than the sum of its proper divisors (36420259728).

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

21466035312 is a wasteful number, since it uses less digits than its factorization.

21466035312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162222 (or 162216 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The spelling of 21466035312 in words is "twenty-one billion, four hundred sixty-six million, thirty-five thousand, three hundred twelve".