21430004200016 has 20 divisors (see below), whose sum is σ = 41795604222624. Its totient is φ = 10644041820000.

The previous prime is 21430004199997. The next prime is 21430004200027. The reversal of 21430004200016 is 61000240003412.

It is a junction number, because it is equal to n+sod(n) for n = 21430004199964 and 21430004200000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4435015010 + ... + 4435019841.

Almost surely, 2^{21430004200016} is an apocalyptic number.

It is an amenable number.

21430004200016 is a deficient number, since it is larger than the sum of its proper divisors (20365600022608).

21430004200016 is a wasteful number, since it uses less digits than its factorization.

21430004200016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8870035010 (or 8870035004 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21430004200016 its reverse (61000240003412), we get a palindrome (82430244203428).

The spelling of 21430004200016 in words is "twenty-one trillion, four hundred thirty billion, four million, two hundred thousand, sixteen".