21416442712 has 32 divisors (see below), whose sum is σ = 47132716320. Its totient is φ = 8930407680.

The previous prime is 21416442703. The next prime is 21416442713. The reversal of 21416442712 is 21724461412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21416442713) 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, 5165989 + ... + 5170132.

It is an arithmetic number, because the mean of its divisors is an integer number (1472897385).

Almost surely, 2^21416442712 is an apocalyptic number.

It is an amenable number.

21416442712 is an abundant number, since it is smaller than the sum of its proper divisors (25716273608).

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

21416442712 is a wasteful number, since it uses less digits than its factorization.

21416442712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10336171 (or 10336167 counting only the distinct ones).

The product of its digits is 21504, while the sum is 34.

The spelling of 21416442712 in words is "twenty-one billion, four hundred sixteen million, four hundred forty-two thousand, seven hundred twelve".