21043402314 has 16 divisors (see below), whose sum is σ = 45912877920. Its totient is φ = 6376788560.

The previous prime is 21043402283. The next prime is 21043402339. The reversal of 21043402314 is 41320434012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159419649 + ... + 159419780.

It is an arithmetic number, because the mean of its divisors is an integer number (2869554870).

Almost surely, 2^21043402314 is an apocalyptic number.

21043402314 is an abundant number, since it is smaller than the sum of its proper divisors (24869475606).

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

21043402314 is a wasteful number, since it uses less digits than its factorization.

21043402314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318839445.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21043402314 its reverse (41320434012), we get a palindrome (62363836326).

The spelling of 21043402314 in words is "twenty-one billion, forty-three million, four hundred two thousand, three hundred fourteen".