21393500214 has 8 divisors (see below), whose sum is σ = 42787000440. Its totient is φ = 7131166736.

The previous prime is 21393500201. The next prime is 21393500237. The reversal of 21393500214 is 41200539312.

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

21393500214 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1782791679 + ... + 1782791690.

It is an arithmetic number, because the mean of its divisors is an integer number (5348375055).

Almost surely, 2^21393500214 is an apocalyptic number.

21393500214 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21393500214 is a wasteful number, since it uses less digits than its factorization.

21393500214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3565583374.

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 21393500214 in words is "twenty-one billion, three hundred ninety-three million, five hundred thousand, two hundred fourteen".