213550730450 has 18 divisors (see below), whose sum is σ = 397210436559. Its totient is φ = 85418985120.

The previous prime is 213550730447. The next prime is 213550730483. The reversal of 213550730450 is 54037055312.

213550730450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 168028667569 + 45522062881 = 409913^2 + 213359^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=326765.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 213550730450.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3234974 + ... + 3300326.

Almost surely, 2^213550730450 is an apocalyptic number.

213550730450 is a deficient number, since it is larger than the sum of its proper divisors (183659706109).

213550730450 is an frugal number, since it uses more digits than its factorization.

213550730450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130718 (or 65360 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 35.

Adding to 213550730450 its reverse (54037055312), we get a palindrome (267587785762).

The spelling of 213550730450 in words is "two hundred thirteen billion, five hundred fifty million, seven hundred thirty thousand, four hundred fifty".