21416863088408 has 16 divisors (see below), whose sum is σ = 40156675728480. Its totient is φ = 10708416227488.

The previous prime is 21416863088407. The next prime is 21416863088419. The reversal of 21416863088408 is 80488036861412.

It is a super-2 number, since 2×21416863088408² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21416863088407) 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 3 ways as a sum of consecutive naturals, for example, 5908241 + ... + 8817087.

It is an arithmetic number, because the mean of its divisors is an integer number (2509792233030).

Almost surely, 2^{21416863088408} is an apocalyptic number.

It is an amenable number.

21416863088408 is a deficient number, since it is larger than the sum of its proper divisors (18739812640072).

21416863088408 is a wasteful number, since it uses less digits than its factorization.

21416863088408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3829186 (or 3829182 counting only the distinct ones).

The product of its (nonzero) digits is 14155776, while the sum is 59.

The spelling of 21416863088408 in words is "twenty-one trillion, four hundred sixteen billion, eight hundred sixty-three million, eighty-eight thousand, four hundred eight".