245581004023 has 2 divisors, whose sum is σ = 245581004024. Its totient is φ = 245581004022.

The previous prime is 245581004017. The next prime is 245581004033. The reversal of 245581004023 is 320400185542.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245581004023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245581004023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245581004033) 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 as a sum of consecutive naturals, namely, 122790502011 + 122790502012.

It is an arithmetic number, because the mean of its divisors is an integer number (122790502012).

Almost surely, 2^245581004023 is an apocalyptic number.

245581004023 is a deficient number, since it is larger than the sum of its proper divisors (1).

245581004023 is an equidigital number, since it uses as much as digits as its factorization.

245581004023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 245581004023 its reverse (320400185542), we get a palindrome (565981189565).

The spelling of 245581004023 in words is "two hundred forty-five billion, five hundred eighty-one million, four thousand, twenty-three".