21302445245403 has 8 divisors (see below), whose sum is σ = 32460868945408. Its totient is φ = 12172825854504.

The previous prime is 21302445245381. The next prime is 21302445245407. The reversal of 21302445245403 is 30454254420312.

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

It is not a de Polignac number, because 21302445245403 - 2⁵ = 21302445245371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21302445245407) 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, 507201077251 + ... + 507201077292.

It is an arithmetic number, because the mean of its divisors is an integer number (4057608618176).

Almost surely, 2^{21302445245403} is an apocalyptic number.

21302445245403 is a deficient number, since it is larger than the sum of its proper divisors (11158423700005).

21302445245403 is a wasteful number, since it uses less digits than its factorization.

21302445245403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014402154553.

The product of its (nonzero) digits is 460800, while the sum is 39.

Adding to 21302445245403 its reverse (30454254420312), we get a palindrome (51756699665715).

The spelling of 21302445245403 in words is "twenty-one trillion, three hundred two billion, four hundred forty-five million, two hundred forty-five thousand, four hundred three".