20530250318 has 4 divisors (see below), whose sum is σ = 30795375480. Its totient is φ = 10265125158.

The previous prime is 20530250297. The next prime is 20530250327. The reversal of 20530250318 is 81305203502.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×20530250318² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5132562578 + ... + 5132562581.

It is an arithmetic number, because the mean of its divisors is an integer number (7698843870).

Almost surely, 2^20530250318 is an apocalyptic number.

20530250318 is a deficient number, since it is larger than the sum of its proper divisors (10265125162).

20530250318 is a wasteful number, since it uses less digits than its factorization.

20530250318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10265125161.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 20530250318 in words is "twenty billion, five hundred thirty million, two hundred fifty thousand, three hundred eighteen".