21045424510530 has 192 divisors, whose sum is σ = 65515703205888. Its totient is φ = 4585728090240.

The previous prime is 21045424510447. The next prime is 21045424510531. The reversal of 21045424510530 is 3501542454012.

21045424510530 is a `hidden beast` number, since 2 + 1 + 0 + 4 + 54 + 24 + 51 + 0 + 530 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21045424510531) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6733242 + ... + 9350261.

It is an arithmetic number, because the mean of its divisors is an integer number (341227620864).

Almost surely, 2^{21045424510530} is an apocalyptic number.

21045424510530 is an abundant number, since it is smaller than the sum of its proper divisors (44470278695358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21045424510530 is a wasteful number, since it uses less digits than its factorization.

21045424510530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16083621 (or 16083618 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 21045424510530 its reverse (3501542454012), we get a palindrome (24546966964542).

The spelling of 21045424510530 in words is "twenty-one trillion, forty-five billion, four hundred twenty-four million, five hundred ten thousand, five hundred thirty".