21411263603 has 16 divisors (see below), whose sum is σ = 21843302400. Its totient is φ = 20983203360.

The previous prime is 21411263597. The next prime is 21411263611. The reversal of 21411263603 is 30636211412.

It is a cyclic number.

It is not a de Polignac number, because 21411263603 - 2⁶ = 21411263539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21411263693) 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, 15593825 + ... + 15595197.

It is an arithmetic number, because the mean of its divisors is an integer number (1365206400).

Almost surely, 2^21411263603 is an apocalyptic number.

21411263603 is a deficient number, since it is larger than the sum of its proper divisors (432038797).

21411263603 is a wasteful number, since it uses less digits than its factorization.

21411263603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2602.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 21411263603 in words is "twenty-one billion, four hundred eleven million, two hundred sixty-three thousand, six hundred three".