21004119696 has 240 divisors, whose sum is σ = 66701564160. Its totient is φ = 5663105280.

The previous prime is 21004119679. The next prime is 21004119713. The reversal of 21004119696 is 69691140012.

It is an interprime number because it is at equal distance from previous prime (21004119679) and next prime (21004119713).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13718451 + ... + 13719981.

It is an arithmetic number, because the mean of its divisors is an integer number (277923184).

Almost surely, 2^21004119696 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 21004119696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33350782080).

21004119696 is an abundant number, since it is smaller than the sum of its proper divisors (45697444464).

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

21004119696 is a wasteful number, since it uses less digits than its factorization.

21004119696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882 (or 1869 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The spelling of 21004119696 in words is "twenty-one billion, four million, one hundred nineteen thousand, six hundred ninety-six".