665203464453 has 12 divisors (see below), whose sum is σ = 974898741824. Its totient is φ = 403153614600.

The previous prime is 665203464451. The next prime is 665203464491. The reversal of 665203464453 is 354464302566.

It is not a de Polignac number, because 665203464453 - 2¹ = 665203464451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665203464451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 916257853 + ... + 916258578.

Almost surely, 2^665203464453 is an apocalyptic number.

It is an amenable number.

665203464453 is a deficient number, since it is larger than the sum of its proper divisors (309695277371).

665203464453 is a wasteful number, since it uses less digits than its factorization.

665203464453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832516456 (or 1832516445 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 48.

The spelling of 665203464453 in words is "six hundred sixty-five billion, two hundred three million, four hundred sixty-four thousand, four hundred fifty-three".