21140003432 has 64 divisors (see below), whose sum is σ = 41769129600. Its totient is φ = 10011006720.

The previous prime is 21140003431. The next prime is 21140003453. The reversal of 21140003432 is 23430004112.

It is not an unprimeable number, because it can be changed into a prime (21140003431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17089118 + ... + 17090354.

It is an arithmetic number, because the mean of its divisors is an integer number (652642650).

Almost surely, 2^21140003432 is an apocalyptic number.

It is an amenable number.

21140003432 is a deficient number, since it is larger than the sum of its proper divisors (20629126168).

21140003432 is a wasteful number, since it uses less digits than its factorization.

21140003432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106 (or 2102 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21140003432 its reverse (23430004112), we get a palindrome (44570007544).

The spelling of 21140003432 in words is "twenty-one billion, one hundred forty million, three thousand, four hundred thirty-two".