245345140305 has 48 divisors (see below), whose sum is σ = 429629091840. Its totient is φ = 129508848000.

The previous prime is 245345140297. The next prime is 245345140319. The reversal of 245345140305 is 503041543542.

245345140305 is a `hidden beast` number, since 2 + 4 + 5 + 345 + 1 + 4 + 0 + 305 = 666.

It is not a de Polignac number, because 245345140305 - 2³ = 245345140297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245345140305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15404136 + ... + 15420054.

It is an arithmetic number, because the mean of its divisors is an integer number (8950606080).

Almost surely, 2^245345140305 is an apocalyptic number.

It is an amenable number.

245345140305 is a deficient number, since it is larger than the sum of its proper divisors (184283951535).

245345140305 is a wasteful number, since it uses less digits than its factorization.

245345140305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19422 (or 19419 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 245345140305 its reverse (503041543542), we get a palindrome (748386683847).

The spelling of 245345140305 in words is "two hundred forty-five billion, three hundred forty-five million, one hundred forty thousand, three hundred five".