245533020313 has 4 divisors (see below), whose sum is σ = 280609166080. Its totient is φ = 210456874548.

The previous prime is 245533020301. The next prime is 245533020319. The reversal of 245533020313 is 313020335542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 313020335542 = 2 ⋅156510167771.

It is a cyclic number.

It is not a de Polignac number, because 245533020313 - 2¹⁷ = 245532889241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245533020319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17538072873 + ... + 17538072886.

It is an arithmetic number, because the mean of its divisors is an integer number (70152291520).

Almost surely, 2^245533020313 is an apocalyptic number.

It is an amenable number.

245533020313 is a deficient number, since it is larger than the sum of its proper divisors (35076145767).

245533020313 is an equidigital number, since it uses as much as digits as its factorization.

245533020313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35076145766.

The product of its (nonzero) digits is 32400, while the sum is 31.

Adding to 245533020313 its reverse (313020335542), we get a palindrome (558553355855).

The spelling of 245533020313 in words is "two hundred forty-five billion, five hundred thirty-three million, twenty thousand, three hundred thirteen".