30561210523145 has 12 divisors (see below), whose sum is σ = 38337276568836. Its totient is φ = 23385969789600.

The previous prime is 30561210523141. The next prime is 30561210523171. The reversal of 30561210523145 is 54132501216503.

It can be written as a sum of positive squares in 2 ways, for example, as 7163828900089 + 23397381623056 = 2676533^2 + 4837084^2 .

It is not a de Polignac number, because 30561210523145 - 2² = 30561210523141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30561210523099 and 30561210523108.

It is not an unprimeable number, because it can be changed into a prime (30561210523141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5777163806 + ... + 5777169095.

It is an arithmetic number, because the mean of its divisors is an integer number (3194773047403).

Almost surely, 2^{30561210523145} is an apocalyptic number.

It is an amenable number.

30561210523145 is a deficient number, since it is larger than the sum of its proper divisors (7776066045691).

30561210523145 is a wasteful number, since it uses less digits than its factorization.

30561210523145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11554332952 (or 11554332929 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

Adding to 30561210523145 its reverse (54132501216503), we get a palindrome (84693711739648).

The spelling of 30561210523145 in words is "thirty trillion, five hundred sixty-one billion, two hundred ten million, five hundred twenty-three thousand, one hundred forty-five".