21035444041 has 8 divisors (see below), whose sum is σ = 21727913984. Its totient is φ = 20343843360.

The previous prime is 21035443993. The next prime is 21035444047. The reversal of 21035444041 is 14044453012.

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 21035444041 - 2¹¹ = 21035441993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21035444047) 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, 167940 + ... + 265093.

It is an arithmetic number, because the mean of its divisors is an integer number (2715989248).

Almost surely, 2^21035444041 is an apocalyptic number.

It is an amenable number.

21035444041 is a deficient number, since it is larger than the sum of its proper divisors (692469943).

21035444041 is a wasteful number, since it uses less digits than its factorization.

21035444041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434631.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 21035444041 its reverse (14044453012), we get a palindrome (35079897053).

The spelling of 21035444041 in words is "twenty-one billion, thirty-five million, four hundred forty-four thousand, forty-one".