12531502045045 has 8 divisors (see below), whose sum is σ = 15092090551224. Its totient is φ = 9989009571264.

The previous prime is 12531502045001. The next prime is 12531502045103. The reversal of 12531502045045 is 54054020513521.

It can be written as a sum of positive squares in 4 ways, for example, as 26218734084 + 12505283310961 = 161922^2 + 3536281^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12531502045045 - 2⁷ = 12531502044917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12531502044995 and 12531502045013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4524006574 + ... + 4524009343.

It is an arithmetic number, because the mean of its divisors is an integer number (1886511318903).

Almost surely, 2^{12531502045045} is an apocalyptic number.

It is an amenable number.

12531502045045 is a deficient number, since it is larger than the sum of its proper divisors (2560588506179).

12531502045045 is an equidigital number, since it uses as much as digits as its factorization.

12531502045045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9048016199.

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 12531502045045 its reverse (54054020513521), we get a palindrome (66585522558566).

The spelling of 12531502045045 in words is "twelve trillion, five hundred thirty-one billion, five hundred two million, forty-five thousand, forty-five".