21454352306 has 16 divisors (see below), whose sum is σ = 32337900000. Its totient is φ = 10675175808.

The previous prime is 21454352299. The next prime is 21454352323. The reversal of 21454352306 is 60325345412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321845 + ... + 382743.

It is an arithmetic number, because the mean of its divisors is an integer number (2021118750).

Almost surely, 2^21454352306 is an apocalyptic number.

21454352306 is a deficient number, since it is larger than the sum of its proper divisors (10883547694).

21454352306 is a wasteful number, since it uses less digits than its factorization.

21454352306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61753.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 21454352306 its reverse (60325345412), we get a palindrome (81779697718).

The spelling of 21454352306 in words is "twenty-one billion, four hundred fifty-four million, three hundred fifty-two thousand, three hundred six".