21413689116 has 24 divisors (see below), whose sum is σ = 50093730960. Its totient is φ = 7119545472.

The previous prime is 21413689091. The next prime is 21413689123. The reversal of 21413689116 is 61198631412.

It is a super-5 number, since 5×21413689116⁵ (a number of 53 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2289001 + ... + 2298336.

It is an arithmetic number, because the mean of its divisors is an integer number (2087238790).

Almost surely, 2^21413689116 is an apocalyptic number.

It is an amenable number.

21413689116 is an abundant number, since it is smaller than the sum of its proper divisors (28680041844).

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

21413689116 is a wasteful number, since it uses less digits than its factorization.

21413689116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4587733 (or 4587731 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The spelling of 21413689116 in words is "twenty-one billion, four hundred thirteen million, six hundred eighty-nine thousand, one hundred sixteen".