20550330530 has 16 divisors (see below), whose sum is σ = 36993254904. Its totient is φ = 8219541120.

The previous prime is 20550330527. The next prime is 20550330553. The reversal of 20550330530 is 3503305502.

It can be written as a sum of positive squares in 4 ways, for example, as 17894680441 + 2655650089 = 133771^2 + 51533^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20550330530.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89294 + ... + 221526.

Almost surely, 2^20550330530 is an apocalyptic number.

20550330530 is a deficient number, since it is larger than the sum of its proper divisors (16442924374).

20550330530 is a wasteful number, since it uses less digits than its factorization.

20550330530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147781.

The product of its (nonzero) digits is 6750, while the sum is 26.

The spelling of 20550330530 in words is "twenty billion, five hundred fifty million, three hundred thirty thousand, five hundred thirty".