66003135453 has 12 divisors (see below), whose sum is σ = 95355564928. Its totient is φ = 43993919880.

The previous prime is 66003135421. The next prime is 66003135461. The reversal of 66003135453 is 35453130066.

66003135453 is a `hidden beast` number, since 6 + 600 + 3 + 1 + 3 + 5 + 45 + 3 = 666.

It is not a de Polignac number, because 66003135453 - 2⁵ = 66003135421 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 (66003135553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 629503 + ... + 726828.

Almost surely, 2^66003135453 is an apocalyptic number.

It is an amenable number.

66003135453 is a deficient number, since it is larger than the sum of its proper divisors (29352429475).

66003135453 is a wasteful number, since it uses less digits than its factorization.

66003135453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361744 (or 1361741 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

The spelling of 66003135453 in words is "sixty-six billion, three million, one hundred thirty-five thousand, four hundred fifty-three".