21362354400401 has 16 divisors (see below), whose sum is σ = 24450161589504. Its totient is φ = 18283564207104.

The previous prime is 21362354400397. The next prime is 21362354400419. The reversal of 21362354400401 is 10400445326312.

It is not a de Polignac number, because 21362354400401 - 2² = 21362354400397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21362354400421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40267865 + ... + 40794921.

It is an arithmetic number, because the mean of its divisors is an integer number (1528135099344).

Almost surely, 2^{21362354400401} is an apocalyptic number.

It is an amenable number.

21362354400401 is a deficient number, since it is larger than the sum of its proper divisors (3087807189103).

21362354400401 is an equidigital number, since it uses as much as digits as its factorization.

21362354400401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535600.

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 21362354400401 its reverse (10400445326312), we get a palindrome (31762799726713).

The spelling of 21362354400401 in words is "twenty-one trillion, three hundred sixty-two billion, three hundred fifty-four million, four hundred thousand, four hundred one".