245643310208 has 32 divisors (see below), whose sum is σ = 502593691260. Its totient is φ = 119502148608.

The previous prime is 245643310207. The next prime is 245643310247. The reversal of 245643310208 is 802013346542.

It can be written as a sum of positive squares in 2 ways, for example, as 222851973184 + 22791337024 = 472072^2 + 150968^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (245643310207) 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, 25928891 + ... + 25938362.

Almost surely, 2^245643310208 is an apocalyptic number.

It is an amenable number.

245643310208 is an abundant number, since it is smaller than the sum of its proper divisors (256950381052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245643310208 is an equidigital number, since it uses as much as digits as its factorization.

245643310208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51867304 (or 51867292 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 245643310208 in words is "two hundred forty-five billion, six hundred forty-three million, three hundred ten thousand, two hundred eight".