845503781313 has 16 divisors (see below), whose sum is σ = 1158679681280. Its totient is φ = 548021500416.

The previous prime is 845503781293. The next prime is 845503781321. The reversal of 845503781313 is 313187305548.

It is not a de Polignac number, because 845503781313 - 2²⁹ = 844966910401 is a prime.

It is a super-3 number, since 3×845503781313³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (845503782313) 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 15 ways as a sum of consecutive naturals, for example, 2722768 + ... + 3017361.

It is an arithmetic number, because the mean of its divisors is an integer number (72417480080).

Almost surely, 2^845503781313 is an apocalyptic number.

It is an amenable number.

845503781313 is a deficient number, since it is larger than the sum of its proper divisors (313175899967).

845503781313 is a wasteful number, since it uses less digits than its factorization.

845503781313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5741496.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 845503781313 in words is "eight hundred forty-five billion, five hundred three million, seven hundred eighty-one thousand, three hundred thirteen".