245421324520243 has 8 divisors (see below), whose sum is σ = 245587936734000. Its totient is φ = 245254716161280.

The previous prime is 245421324520129. The next prime is 245421324520271. The reversal of 245421324520243 is 342025423124542.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245421324520243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245421324520243.

It is not an unprimeable number, because it can be changed into a prime (245421324520643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132697983 + ... + 134534743.

It is an arithmetic number, because the mean of its divisors is an integer number (30698492091750).

Almost surely, 2^{245421324520243} is an apocalyptic number.

245421324520243 is a deficient number, since it is larger than the sum of its proper divisors (166612213757).

245421324520243 is a wasteful number, since it uses less digits than its factorization.

245421324520243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1927397.

The product of its (nonzero) digits is 1843200, while the sum is 43.

Adding to 245421324520243 its reverse (342025423124542), we get a palindrome (587446747644785).

The spelling of 245421324520243 in words is "two hundred forty-five trillion, four hundred twenty-one billion, three hundred twenty-four million, five hundred twenty thousand, two hundred forty-three".