21302402043403 has 8 divisors (see below), whose sum is σ = 22964386159008. Its totient is φ = 19643751899904.

The previous prime is 21302402043343. The next prime is 21302402043407. The reversal of 21302402043403 is 30434020420312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21302402043403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21302402043407) 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, 833479750 + ... + 833505307.

It is an arithmetic number, because the mean of its divisors is an integer number (2870548269876).

Almost surely, 2^{21302402043403} is an apocalyptic number.

21302402043403 is a deficient number, since it is larger than the sum of its proper divisors (1661984115605).

21302402043403 is a wasteful number, since it uses less digits than its factorization.

21302402043403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666986053.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 21302402043403 its reverse (30434020420312), we get a palindrome (51736422463715).

The spelling of 21302402043403 in words is "twenty-one trillion, three hundred two billion, four hundred two million, forty-three thousand, four hundred three".