20451052530530 has 8 divisors (see below), whose sum is σ = 36811894554972. Its totient is φ = 8180421012208.

The previous prime is 20451052530487. The next prime is 20451052530547. The reversal of 20451052530530 is 3503525015402.

It can be written as a sum of positive squares in 2 ways, for example, as 17489132364001 + 2961920166529 = 4182001^2 + 1721023^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1022552626517 + ... + 1022552626536.

Almost surely, 2^{20451052530530} is an apocalyptic number.

20451052530530 is a deficient number, since it is larger than the sum of its proper divisors (16360842024442).

20451052530530 is a wasteful number, since it uses less digits than its factorization.

20451052530530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045105253060.

The product of its (nonzero) digits is 90000, while the sum is 35.

Adding to 20451052530530 its reverse (3503525015402), we get a palindrome (23954577545932).

The spelling of 20451052530530 in words is "twenty trillion, four hundred fifty-one billion, fifty-two million, five hundred thirty thousand, five hundred thirty".