21063498573 has 16 divisors (see below), whose sum is σ = 31287957120. Its totient is φ = 12515181504.

The previous prime is 21063498551. The next prime is 21063498581. The reversal of 21063498573 is 37589436012.

It is not a de Polignac number, because 21063498573 - 2⁵ = 21063498541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21063491573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9310761 + ... + 9313022.

It is an arithmetic number, because the mean of its divisors is an integer number (1955497320).

It is a 1-persistent number, because it is pandigital, but 2⋅21063498573 = 42126997146 is not.

Almost surely, 2^21063498573 is an apocalyptic number.

It is an amenable number.

21063498573 is a deficient number, since it is larger than the sum of its proper divisors (10224458547).

21063498573 is a wasteful number, since it uses less digits than its factorization.

21063498573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18623828.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 21063498573 in words is "twenty-one billion, sixty-three million, four hundred ninety-eight thousand, five hundred seventy-three".