12515150530445 has 8 divisors (see below), whose sum is σ = 15018221563800. Its totient is φ = 10012093139520.

The previous prime is 12515150530427. The next prime is 12515150530459. The reversal of 12515150530445 is 54403505151521.

It can be written as a sum of positive squares in 4 ways, for example, as 2963706857764 + 9551443672681 = 1721542^2 + 3090541^2 .

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

It is not a de Polignac number, because 12515150530445 - 2⁶ = 12515150530381 is a prime.

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, 1270286 + ... + 5161775.

It is an arithmetic number, because the mean of its divisors is an integer number (1877277695475).

Almost surely, 2^{12515150530445} is an apocalyptic number.

It is an amenable number.

12515150530445 is a deficient number, since it is larger than the sum of its proper divisors (2503071033355).

12515150530445 is an equidigital number, since it uses as much as digits as its factorization.

12515150530445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6821215.

The product of its (nonzero) digits is 300000, while the sum is 41.

Adding to 12515150530445 its reverse (54403505151521), we get a palindrome (66918655681966).

The spelling of 12515150530445 in words is "twelve trillion, five hundred fifteen billion, one hundred fifty million, five hundred thirty thousand, four hundred forty-five".