21140343032 has 16 divisors (see below), whose sum is σ = 39659155200. Its totient is φ = 10564568320.

The previous prime is 21140343023. The next prime is 21140343109. The reversal of 21140343032 is 23034304112.

It is a junction number, because it is equal to n+sod(n) for n = 21140342989 and 21140343007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 684344 + ... + 714567.

It is an arithmetic number, because the mean of its divisors is an integer number (2478697200).

Almost surely, 2^21140343032 is an apocalyptic number.

It is an amenable number.

21140343032 is a deficient number, since it is larger than the sum of its proper divisors (18518812168).

21140343032 is a wasteful number, since it uses less digits than its factorization.

21140343032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400806 (or 1400802 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21140343032 its reverse (23034304112), we get a palindrome (44174647144).

The spelling of 21140343032 in words is "twenty-one billion, one hundred forty million, three hundred forty-three thousand, thirty-two".