21614204604 has 72 divisors (see below), whose sum is σ = 54561884160. Its totient is φ = 6640968384.

The previous prime is 21614204597. The next prime is 21614204657. The reversal of 21614204604 is 40640241612.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 277509 + ... + 346755.

Almost surely, 2^21614204604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21614204604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27280942080).

21614204604 is an abundant number, since it is smaller than the sum of its proper divisors (32947679556).

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

21614204604 is a wasteful number, since it uses less digits than its factorization.

21614204604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69347 (or 69308 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 21614204604 in words is "twenty-one billion, six hundred fourteen million, two hundred four thousand, six hundred four".