245251617163 has 24 divisors (see below), whose sum is σ = 284100325376. Its totient is φ = 207393793200.

The previous prime is 245251617151. The next prime is 245251617173. The reversal of 245251617163 is 361716152542.

It is a de Polignac number, because none of the positive numbers 2^k-245251617163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245251617173) 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 23 ways as a sum of consecutive naturals, for example, 39105718 + ... + 39111988.

Almost surely, 2^245251617163 is an apocalyptic number.

245251617163 is a deficient number, since it is larger than the sum of its proper divisors (38848708213).

245251617163 is an frugal number, since it uses more digits than its factorization.

245251617163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7255 (or 7172 counting only the distinct ones).

The product of its digits is 302400, while the sum is 43.

The spelling of 245251617163 in words is "two hundred forty-five billion, two hundred fifty-one million, six hundred seventeen thousand, one hundred sixty-three".