21400110344 has 16 divisors (see below), whose sum is σ = 40724091600. Its totient is φ = 10540352592.

The previous prime is 21400110337. The next prime is 21400110373. The reversal of 21400110344 is 44301100412.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 19962254 + ... + 19963325.

It is an arithmetic number, because the mean of its divisors is an integer number (2545255725).

Almost surely, 2^21400110344 is an apocalyptic number.

It is an amenable number.

21400110344 is a deficient number, since it is larger than the sum of its proper divisors (19323981256).

21400110344 is a wasteful number, since it uses less digits than its factorization.

21400110344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39925652 (or 39925648 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21400110344 its reverse (44301100412), we get a palindrome (65701210756).

The spelling of 21400110344 in words is "twenty-one billion, four hundred million, one hundred ten thousand, three hundred forty-four".