20430370250 has 16 divisors (see below), whose sum is σ = 38245653576. Its totient is φ = 8172148000.

The previous prime is 20430370249. The next prime is 20430370309. The reversal of 20430370250 is 5207303402.

It can be written as a sum of positive squares in 4 ways, for example, as 9584605801 + 10845764449 = 97901^2 + 104143^2 .

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 7 ways as a sum of consecutive naturals, for example, 40860491 + ... + 40860990.

Almost surely, 2^20430370250 is an apocalyptic number.

20430370250 is a deficient number, since it is larger than the sum of its proper divisors (17815283326).

20430370250 is an equidigital number, since it uses as much as digits as its factorization.

20430370250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81721498 (or 81721488 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 26.

Adding to 20430370250 its reverse (5207303402), we get a palindrome (25637673652).

The spelling of 20430370250 in words is "twenty billion, four hundred thirty million, three hundred seventy thousand, two hundred fifty".