21116603416 has 16 divisors (see below), whose sum is σ = 41315094000. Its totient is φ = 10099245024.

The previous prime is 21116603411. The next prime is 21116603419. The reversal of 21116603416 is 61430661112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21116603411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57381891 + ... + 57382258.

It is an arithmetic number, because the mean of its divisors is an integer number (2582193375).

Almost surely, 2^21116603416 is an apocalyptic number.

It is an amenable number.

21116603416 is a deficient number, since it is larger than the sum of its proper divisors (20198490584).

21116603416 is a wasteful number, since it uses less digits than its factorization.

21116603416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114764178 (or 114764174 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 21116603416 in words is "twenty-one billion, one hundred sixteen million, six hundred three thousand, four hundred sixteen".