21096944063 has 32 divisors (see below), whose sum is σ = 24133724160. Its totient is φ = 18281687040.

The previous prime is 21096944027. The next prime is 21096944111. The reversal of 21096944063 is 36044969012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21096944063 - 2³⁰ = 20023202239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21096949063) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14824970 + ... + 14826392.

It is an arithmetic number, because the mean of its divisors is an integer number (754178880).

Almost surely, 2^21096944063 is an apocalyptic number.

21096944063 is a deficient number, since it is larger than the sum of its proper divisors (3036780097).

21096944063 is a wasteful number, since it uses less digits than its factorization.

21096944063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1959.

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 21096944063 in words is "twenty-one billion, ninety-six million, nine hundred forty-four thousand, sixty-three".