21413304003 has 16 divisors (see below), whose sum is σ = 35139781376. Its totient is φ = 11294929440.

The previous prime is 21413303957. The next prime is 21413304013. The reversal of 21413304003 is 30040331412.

It is not a de Polignac number, because 21413304003 - 2¹² = 21413299907 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (21413304013) 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, 39218233 + ... + 39218778.

It is an arithmetic number, because the mean of its divisors is an integer number (2196236336).

Almost surely, 2^21413304003 is an apocalyptic number.

21413304003 is a deficient number, since it is larger than the sum of its proper divisors (13726477373).

21413304003 is a wasteful number, since it uses less digits than its factorization.

21413304003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78437034.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21413304003 its reverse (30040331412), we get a palindrome (51453635415).

The spelling of 21413304003 in words is "twenty-one billion, four hundred thirteen million, three hundred four thousand, three".