665224301853 has 24 divisors (see below), whose sum is σ = 977252920800. Its totient is φ = 435927269664.

The previous prime is 665224301831. The next prime is 665224301881. The reversal of 665224301853 is 358103422566.

665224301853 is a `hidden beast` number, since 6 + 6 + 522 + 43 + 0 + 1 + 85 + 3 = 666.

It is not a de Polignac number, because 665224301853 - 2¹⁸ = 665224039709 is a prime.

It is a super-2 number, since 2×665224301853² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 665224301799 and 665224301808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665224301953) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6651051 + ... + 6750327.

It is an arithmetic number, because the mean of its divisors is an integer number (40718871700).

Almost surely, 2^665224301853 is an apocalyptic number.

It is an amenable number.

665224301853 is a deficient number, since it is larger than the sum of its proper divisors (312028618947).

665224301853 is a wasteful number, since it uses less digits than its factorization.

665224301853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111961 (or 111958 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 665224301853 in words is "six hundred sixty-five billion, two hundred twenty-four million, three hundred one thousand, eight hundred fifty-three".