21430004200015 has 16 divisors (see below), whose sum is σ = 26708409778176. Its totient is φ = 16489185876000.

The previous prime is 21430004199997. The next prime is 21430004200027. The reversal of 21430004200015 is 51000240003412.

It is not a de Polignac number, because 21430004200015 - 2²³ = 21429995811407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424079311 + ... + 424129840.

It is an arithmetic number, because the mean of its divisors is an integer number (1669275611136).

Almost surely, 2^{21430004200015} is an apocalyptic number.

21430004200015 is a deficient number, since it is larger than the sum of its proper divisors (5278405578161).

21430004200015 is a wasteful number, since it uses less digits than its factorization.

21430004200015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848209350.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 21430004200015 its reverse (51000240003412), we get a palindrome (72430244203427).

The spelling of 21430004200015 in words is "twenty-one trillion, four hundred thirty billion, four million, two hundred thousand, fifteen".