21041324435 has 16 divisors (see below), whose sum is σ = 25918667712. Its totient is φ = 16388697600.

The previous prime is 21041324411. The next prime is 21041324459. The reversal of 21041324435 is 53442314012.

It is an interprime number because it is at equal distance from previous prime (21041324411) and next prime (21041324459).

It is not a de Polignac number, because 21041324435 - 2¹⁶ = 21041258899 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21041324398 and 21041324407.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5546 + ... + 205215.

It is an arithmetic number, because the mean of its divisors is an integer number (1619916732).

Almost surely, 2^21041324435 is an apocalyptic number.

21041324435 is a deficient number, since it is larger than the sum of its proper divisors (4877343277).

21041324435 is a wasteful number, since it uses less digits than its factorization.

21041324435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211294.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 21041324435 its reverse (53442314012), we get a palindrome (74483638447).

The spelling of 21041324435 in words is "twenty-one billion, forty-one million, three hundred twenty-four thousand, four hundred thirty-five".