21529247314 has 8 divisors (see below), whose sum is σ = 32357318220. Its totient is φ = 10743474576.

The previous prime is 21529247309. The next prime is 21529247317. The reversal of 21529247314 is 41374292512.

It can be written as a sum of positive squares in 2 ways, for example, as 21136216689 + 393030625 = 145383^2 + 19825^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21529247317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10573269 + ... + 10575304.

Almost surely, 2^21529247314 is an apocalyptic number.

21529247314 is a deficient number, since it is larger than the sum of its proper divisors (10828070906).

21529247314 is a wasteful number, since it uses less digits than its factorization.

21529247314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21149084.

The product of its digits is 120960, while the sum is 40.

The spelling of 21529247314 in words is "twenty-one billion, five hundred twenty-nine million, two hundred forty-seven thousand, three hundred fourteen".