245120215345 has 16 divisors (see below), whose sum is σ = 303065538048. Its totient is φ = 190182738240.

The previous prime is 245120215343. The next prime is 245120215421. The reversal of 245120215345 is 543512021542.

It is a happy number.

It is not a de Polignac number, because 245120215345 - 2¹ = 245120215343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245120215345.

It is not an unprimeable number, because it can be changed into a prime (245120215343) 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 15 ways as a sum of consecutive naturals, for example, 2072649 + ... + 2187718.

It is an arithmetic number, because the mean of its divisors is an integer number (18941596128).

Almost surely, 2^245120215345 is an apocalyptic number.

It is an amenable number.

245120215345 is a deficient number, since it is larger than the sum of its proper divisors (57945322703).

245120215345 is a wasteful number, since it uses less digits than its factorization.

245120215345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4260720.

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 245120215345 its reverse (543512021542), we get a palindrome (788632236887).

The spelling of 245120215345 in words is "two hundred forty-five billion, one hundred twenty million, two hundred fifteen thousand, three hundred forty-five".