21400002343403 has 8 divisors (see below), whose sum is σ = 22789801886688. Its totient is φ = 20024755675264.

The previous prime is 21400002343337. The next prime is 21400002343453. The reversal of 21400002343403 is 30434320000412.

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 21400002343403 - 2⁸ = 21400002343147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21400002343453) 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, 3638215751 + ... + 3638221632.

It is an arithmetic number, because the mean of its divisors is an integer number (2848725235836).

Almost surely, 2^{21400002343403} is an apocalyptic number.

21400002343403 is a deficient number, since it is larger than the sum of its proper divisors (1389799543285).

21400002343403 is a wasteful number, since it uses less digits than its factorization.

21400002343403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7276437573.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 21400002343403 its reverse (30434320000412), we get a palindrome (51834322343815).

The spelling of 21400002343403 in words is "twenty-one trillion, four hundred billion, two million, three hundred forty-three thousand, four hundred three".