21214036604616 has 64 divisors (see below), whose sum is σ = 55680480414720. Its totient is φ = 6722399407680.

The previous prime is 21214036604611. The next prime is 21214036604627. The reversal of 21214036604616 is 61640663041212.

It is not an unprimeable number, because it can be changed into a prime (21214036604611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117797220 + ... + 117977171.

It is an arithmetic number, because the mean of its divisors is an integer number (870007506480).

Almost surely, 2^{21214036604616} is an apocalyptic number.

It is an amenable number.

21214036604616 is an abundant number, since it is smaller than the sum of its proper divisors (34466443810104).

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

21214036604616 is a wasteful number, since it uses less digits than its factorization.

21214036604616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235774586 (or 235774582 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

Adding to 21214036604616 its reverse (61640663041212), we get a palindrome (82854699645828).

The spelling of 21214036604616 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, six hundred four thousand, six hundred sixteen".