21440512041 has 16 divisors (see below), whose sum is σ = 30816065280. Its totient is φ = 13181437440.

The previous prime is 21440512007. The next prime is 21440512097. The reversal of 21440512041 is 14021504412.

It is not a de Polignac number, because 21440512041 - 2⁶ = 21440511977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21440562041) 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 15 ways as a sum of consecutive naturals, for example, 224040 + ... + 305081.

It is an arithmetic number, because the mean of its divisors is an integer number (1926004080).

Almost surely, 2^21440512041 is an apocalyptic number.

It is an amenable number.

21440512041 is a deficient number, since it is larger than the sum of its proper divisors (9375553239).

21440512041 is a wasteful number, since it uses less digits than its factorization.

21440512041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530176.

The product of its (nonzero) digits is 1280, while the sum is 24.

The spelling of 21440512041 in words is "twenty-one billion, four hundred forty million, five hundred twelve thousand, forty-one".