245642016605 has 8 divisors (see below), whose sum is σ = 299602722264. Its totient is φ = 193292078400.

The previous prime is 245642016601. The next prime is 245642016679. The reversal of 245642016605 is 506610246542.

It can be written as a sum of positive squares in 4 ways, for example, as 24514478041 + 221127538564 = 156571^2 + 470242^2 .

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

It is not a de Polignac number, because 245642016605 - 2² = 245642016601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245642016601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402691526 + ... + 402692135.

It is an arithmetic number, because the mean of its divisors is an integer number (37450340283).

Almost surely, 2^245642016605 is an apocalyptic number.

It is an amenable number.

245642016605 is a deficient number, since it is larger than the sum of its proper divisors (53960705659).

245642016605 is an equidigital number, since it uses as much as digits as its factorization.

245642016605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805383727.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 245642016605 in words is "two hundred forty-five billion, six hundred forty-two million, sixteen thousand, six hundred five".