605385780253 has 4 divisors (see below), whose sum is σ = 637248189760. Its totient is φ = 573523370748.

The previous prime is 605385780203. The next prime is 605385780313. The reversal of 605385780253 is 352087583506.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 605385780253 - 2⁹ = 605385779741 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 605385780253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (605385780203) 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 3 ways as a sum of consecutive naturals, for example, 15931204725 + ... + 15931204762.

It is an arithmetic number, because the mean of its divisors is an integer number (159312047440).

Almost surely, 2^605385780253 is an apocalyptic number.

It is an amenable number.

605385780253 is a deficient number, since it is larger than the sum of its proper divisors (31862409507).

605385780253 is a wasteful number, since it uses less digits than its factorization.

605385780253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31862409506.

The product of its (nonzero) digits is 6048000, while the sum is 52.

The spelling of 605385780253 in words is "six hundred five billion, three hundred eighty-five million, seven hundred eighty thousand, two hundred fifty-three".