245044253135509 has 16 divisors (see below), whose sum is σ = 248276200781952. Its totient is φ = 241819047952128.

The previous prime is 245044253135497. The next prime is 245044253135579. The reversal of 245044253135509 is 905531352440542.

It is a cyclic number.

It is not a de Polignac number, because 245044253135509 - 2²⁷ = 245044118917781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245044253135579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477680137 + ... + 478192849.

It is an arithmetic number, because the mean of its divisors is an integer number (15517262548872).

Almost surely, 2^{245044253135509} is an apocalyptic number.

It is an amenable number.

245044253135509 is a deficient number, since it is larger than the sum of its proper divisors (3231947646443).

245044253135509 is a wasteful number, since it uses less digits than its factorization.

245044253135509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519276.

The product of its (nonzero) digits is 12960000, while the sum is 52.

The spelling of 245044253135509 in words is "two hundred forty-five trillion, forty-four billion, two hundred fifty-three million, one hundred thirty-five thousand, five hundred nine".