245064386561 has 8 divisors (see below), whose sum is σ = 245411735424. Its totient is φ = 244717159680.

The previous prime is 245064386557. The next prime is 245064386569. The reversal of 245064386561 is 165683460542.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 245064386561 - 2² = 245064386557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245064386569) 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 7 ways as a sum of consecutive naturals, for example, 4450580 + ... + 4505306.

It is an arithmetic number, because the mean of its divisors is an integer number (30676466928).

Almost surely, 2^245064386561 is an apocalyptic number.

It is an amenable number.

245064386561 is a deficient number, since it is larger than the sum of its proper divisors (347348863).

245064386561 is an equidigital number, since it uses as much as digits as its factorization.

245064386561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60991.

The product of its (nonzero) digits is 4147200, while the sum is 50.

The spelling of 245064386561 in words is "two hundred forty-five billion, sixty-four million, three hundred eighty-six thousand, five hundred sixty-one".