245320243513 has 8 divisors (see below), whose sum is σ = 248708699528. Its totient is φ = 241932541824.

The previous prime is 245320243477. The next prime is 245320243523. The reversal of 245320243513 is 315342023542.

It can be written as a sum of positive squares in 4 ways, for example, as 43686016144 + 201634227369 = 209012^2 + 449037^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245320243513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245320243523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482731 + ... + 850687.

It is an arithmetic number, because the mean of its divisors is an integer number (31088587441).

Almost surely, 2^245320243513 is an apocalyptic number.

It is an amenable number.

245320243513 is a deficient number, since it is larger than the sum of its proper divisors (3388456015).

245320243513 is an equidigital number, since it uses as much as digits as its factorization.

245320243513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377163.

The product of its (nonzero) digits is 86400, while the sum is 34.

The spelling of 245320243513 in words is "two hundred forty-five billion, three hundred twenty million, two hundred forty-three thousand, five hundred thirteen".