245515311045 has 24 divisors (see below), whose sum is σ = 426919513176. Its totient is φ = 130523148288.

The previous prime is 245515311037. The next prime is 245515311053. The reversal of 245515311045 is 540113515542.

245515311045 is a `hidden beast` number, since 2 + 4 + 5 + 515 + 31 + 104 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (245515311037) and next prime (245515311053).

It can be written as a sum of positive squares in 4 ways, for example, as 1685759364 + 243829551681 = 41058^2 + 493791^2 .

It is not a de Polignac number, because 245515311045 - 2³ = 245515311037 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8701404 + ... + 8729573.

It is an arithmetic number, because the mean of its divisors is an integer number (17788313049).

Almost surely, 2^245515311045 is an apocalyptic number.

It is an amenable number.

245515311045 is a deficient number, since it is larger than the sum of its proper divisors (181404202131).

245515311045 is a wasteful number, since it uses less digits than its factorization.

245515311045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17431301 (or 17431298 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

Adding to 245515311045 its reverse (540113515542), we get a palindrome (785628826587).

The spelling of 245515311045 in words is "two hundred forty-five billion, five hundred fifteen million, three hundred eleven thousand, forty-five".