21432244333513 has 8 divisors (see below), whose sum is σ = 23084559174656. Its totient is φ = 19780455301200.

The previous prime is 21432244333469. The next prime is 21432244333571. The reversal of 21432244333513 is 31533344223412.

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

It is a cyclic number.

It is not a de Polignac number, because 21432244333513 - 2⁹ = 21432244333001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21432244333573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131367543 + ... + 131530588.

It is an arithmetic number, because the mean of its divisors is an integer number (2885569896832).

Almost surely, 2^{21432244333513} is an apocalyptic number.

It is an amenable number.

21432244333513 is a deficient number, since it is larger than the sum of its proper divisors (1652314841143).

21432244333513 is a wasteful number, since it uses less digits than its factorization.

21432244333513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262904415.

The product of its digits is 622080, while the sum is 40.

Adding to 21432244333513 its reverse (31533344223412), we get a palindrome (52965588556925).

The spelling of 21432244333513 in words is "twenty-one trillion, four hundred thirty-two billion, two hundred forty-four million, three hundred thirty-three thousand, five hundred thirteen".