245856660655 has 16 divisors (see below), whose sum is σ = 315819446400. Its totient is φ = 183175270560.

The previous prime is 245856660631. The next prime is 245856660689. The reversal of 245856660655 is 556066658542.

245856660655 is digitally balanced in base 11, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-245856660655 is a prime.

245856660655 is strictly pandigital in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 245856660655.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 21926301 + ... + 21937510.

It is an arithmetic number, because the mean of its divisors is an integer number (19738715400).

Almost surely, 2^245856660655 is an apocalyptic number.

245856660655 is a deficient number, since it is larger than the sum of its proper divisors (69962785745).

245856660655 is a wasteful number, since it uses less digits than its factorization.

245856660655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43863894.

The product of its (nonzero) digits is 51840000, while the sum is 58.

The spelling of 245856660655 in words is "two hundred forty-five billion, eight hundred fifty-six million, six hundred sixty thousand, six hundred fifty-five".