245244134155215 has 32 divisors (see below), whose sum is σ = 424436069869056. Its totient is φ = 120203698942080.

The previous prime is 245244134155093. The next prime is 245244134155271. The reversal of 245244134155215 is 512551431442542.

It is a happy number.

It is not a de Polignac number, because 245244134155215 - 2¹¹ = 245244134153167 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2770136851 + ... + 2770225380.

It is an arithmetic number, because the mean of its divisors is an integer number (13263627183408).

Almost surely, 2^{245244134155215} is an apocalyptic number.

245244134155215 is a deficient number, since it is larger than the sum of its proper divisors (179191935713841).

245244134155215 is a wasteful number, since it uses less digits than its factorization.

245244134155215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5540362479.

The product of its digits is 3840000, while the sum is 48.

Adding to 245244134155215 its reverse (512551431442542), we get a palindrome (757795565597757).

The spelling of 245244134155215 in words is "two hundred forty-five trillion, two hundred forty-four billion, one hundred thirty-four million, one hundred fifty-five thousand, two hundred fifteen".