245502320213 has 4 divisors (see below), whose sum is σ = 245593689600. Its totient is φ = 245410950828.

The previous prime is 245502320209. The next prime is 245502320227. The reversal of 245502320213 is 312023205542.

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: 312023205542 = 2 ⋅156011602771.

It is a cyclic number.

It is not a de Polignac number, because 245502320213 - 2² = 245502320209 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 (245502320233) 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, 45680663 + ... + 45686036.

It is an arithmetic number, because the mean of its divisors is an integer number (61398422400).

Almost surely, 2^245502320213 is an apocalyptic number.

It is an amenable number.

245502320213 is a deficient number, since it is larger than the sum of its proper divisors (91369387).

245502320213 is an equidigital number, since it uses as much as digits as its factorization.

245502320213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91369386.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 245502320213 its reverse (312023205542), we get a palindrome (557525525755).

The spelling of 245502320213 in words is "two hundred forty-five billion, five hundred two million, three hundred twenty thousand, two hundred thirteen".