245303404909 has 4 divisors (see below), whose sum is σ = 245304945340. Its totient is φ = 245301864480.

The previous prime is 245303404817. The next prime is 245303404939. The reversal of 245303404909 is 909404303542.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 167878672900 + 77424732009 = 409730^2 + 278253^2 .

It is a cyclic number.

It is not a de Polignac number, because 245303404909 - 2⁹ = 245303404397 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 (245303404939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499674 + ... + 860395.

It is an arithmetic number, because the mean of its divisors is an integer number (61326236335).

Almost surely, 2^245303404909 is an apocalyptic number.

It is an amenable number.

245303404909 is a deficient number, since it is larger than the sum of its proper divisors (1540431).

245303404909 is a wasteful number, since it uses less digits than its factorization.

245303404909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540430.

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 245303404909 in words is "two hundred forty-five billion, three hundred three million, four hundred four thousand, nine hundred nine".