21097468063 has 16 divisors (see below), whose sum is σ = 24194027520. Its totient is φ = 18021640896.

The previous prime is 21097468033. The next prime is 21097468081. The reversal of 21097468063 is 36086479012.

It is a de Polignac number, because none of the positive numbers 2^k-21097468063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21097468033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6762618 + ... + 6765736.

It is an arithmetic number, because the mean of its divisors is an integer number (1512126720).

Almost surely, 2^21097468063 is an apocalyptic number.

21097468063 is a deficient number, since it is larger than the sum of its proper divisors (3096559457).

21097468063 is a wasteful number, since it uses less digits than its factorization.

21097468063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6126.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 21097468063 in words is "twenty-one billion, ninety-seven million, four hundred sixty-eight thousand, sixty-three".