21416863088418 has 32 divisors (see below), whose sum is σ = 51081213828096. Its totient is φ = 5853055750608.

The previous prime is 21416863088407. The next prime is 21416863088419. The reversal of 21416863088418 is 81488036861412.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21416863088419) 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, 11085331896 + ... + 11085333827.

It is an arithmetic number, because the mean of its divisors is an integer number (1596287932128).

Almost surely, 2^{21416863088418} is an apocalyptic number.

21416863088418 is an abundant number, since it is smaller than the sum of its proper divisors (29664350739678).

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

21416863088418 is a wasteful number, since it uses less digits than its factorization.

21416863088418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22170665758.

The product of its (nonzero) digits is 14155776, while the sum is 60.

The spelling of 21416863088418 in words is "twenty-one trillion, four hundred sixteen billion, eight hundred sixty-three million, eighty-eight thousand, four hundred eighteen".