21140432410 has 16 divisors (see below), whose sum is σ = 38061626400. Its totient is φ = 8454206736.

The previous prime is 21140432393. The next prime is 21140432413. The reversal of 21140432410 is 1423404112.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21140432413) 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, 200220 + ... + 286999.

It is an arithmetic number, because the mean of its divisors is an integer number (2378851650).

Almost surely, 2^21140432410 is an apocalyptic number.

21140432410 is a deficient number, since it is larger than the sum of its proper divisors (16921193990).

21140432410 is a wasteful number, since it uses less digits than its factorization.

21140432410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491565.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21140432410 its reverse (1423404112), we get a palindrome (22563836522).

The spelling of 21140432410 in words is "twenty-one billion, one hundred forty million, four hundred thirty-two thousand, four hundred ten".