21140432341 has 8 divisors (see below), whose sum is σ = 24749774784. Its totient is φ = 17678410080.

The previous prime is 21140432333. The next prime is 21140432371. The reversal of 21140432341 is 14323404112.

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 21140432341 - 2³ = 21140432333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21140432321) 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 7 ways as a sum of consecutive naturals, for example, 36829735 + ... + 36830308.

It is an arithmetic number, because the mean of its divisors is an integer number (3093721848).

Almost surely, 2^21140432341 is an apocalyptic number.

It is an amenable number.

21140432341 is a deficient number, since it is larger than the sum of its proper divisors (3609342443).

21140432341 is an equidigital number, since it uses as much as digits as its factorization.

21140432341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73660091.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21140432341 its reverse (14323404112), we get a palindrome (35463836453).

The spelling of 21140432341 in words is "twenty-one billion, one hundred forty million, four hundred thirty-two thousand, three hundred forty-one".