20530452321045 has 12 divisors (see below), whose sum is σ = 35586117356556. Its totient is φ = 10949574571200.

The previous prime is 20530452321019. The next prime is 20530452321053. The reversal of 20530452321045 is 54012325403502.

20530452321045 is a `hidden beast` number, since 2 + 0 + 530 + 4 + 52 + 32 + 1 + 0 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14041852584516 + 6488599736529 = 3747246^2 + 2547273^2 .

It is not a de Polignac number, because 20530452321045 - 2⁵ = 20530452321013 is a prime.

It is a super-3 number, since 3×20530452321045³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 228116136856 + ... + 228116136945.

It is an arithmetic number, because the mean of its divisors is an integer number (2965509779713).

Almost surely, 2^{20530452321045} is an apocalyptic number.

It is an amenable number.

20530452321045 is a deficient number, since it is larger than the sum of its proper divisors (15055665035511).

20530452321045 is a wasteful number, since it uses less digits than its factorization.

20530452321045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456232273812 (or 456232273809 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 20530452321045 its reverse (54012325403502), we get a palindrome (74542777724547).

The spelling of 20530452321045 in words is "twenty trillion, five hundred thirty billion, four hundred fifty-two million, three hundred twenty-one thousand, forty-five".