21362354400403 has 4 divisors (see below), whose sum is σ = 21368407777240. Its totient is φ = 21356301023568.

The previous prime is 21362354400397. The next prime is 21362354400419. The reversal of 21362354400403 is 30400445326312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21362354400403 - 2⁵ = 21362354400371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21362354400433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3026683125 + ... + 3026690182.

It is an arithmetic number, because the mean of its divisors is an integer number (5342101944310).

Almost surely, 2^{21362354400403} is an apocalyptic number.

21362354400403 is a deficient number, since it is larger than the sum of its proper divisors (6053376837).

21362354400403 is an equidigital number, since it uses as much as digits as its factorization.

21362354400403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6053376836.

The product of its (nonzero) digits is 207360, while the sum is 37.

Adding to 21362354400403 its reverse (30400445326312), we get a palindrome (51762799726715).

The spelling of 21362354400403 in words is "twenty-one trillion, three hundred sixty-two billion, three hundred fifty-four million, four hundred thousand, four hundred three".