21430443014 has 8 divisors (see below), whose sum is σ = 32157141240. Its totient is φ = 10711395936.

The previous prime is 21430442987. The next prime is 21430443017. The reversal of 21430443014 is 41034403412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21430443017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1905779 + ... + 1916990.

It is an arithmetic number, because the mean of its divisors is an integer number (4019642655).

Almost surely, 2^21430443014 is an apocalyptic number.

21430443014 is a deficient number, since it is larger than the sum of its proper divisors (10726698226).

21430443014 is a wasteful number, since it uses less digits than its factorization.

21430443014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3825574.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21430443014 its reverse (41034403412), we get a palindrome (62464846426).

The spelling of 21430443014 in words is "twenty-one billion, four hundred thirty million, four hundred forty-three thousand, fourteen".