66003472253 has 16 divisors (see below), whose sum is σ = 68126150400. Its totient is φ = 63909687744.

The previous prime is 66003472243. The next prime is 66003472261. The reversal of 66003472253 is 35227430066.

It is a happy number.

It is not a de Polignac number, because 66003472253 - 2¹⁶ = 66003406717 is a prime.

It is a super-3 number, since 3×66003472253³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66003472243) 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, 2583500 + ... + 2608922.

It is an arithmetic number, because the mean of its divisors is an integer number (4257884400).

Almost surely, 2^66003472253 is an apocalyptic number.

It is an amenable number.

66003472253 is a deficient number, since it is larger than the sum of its proper divisors (2122678147).

66003472253 is a wasteful number, since it uses less digits than its factorization.

66003472253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25988.

The product of its (nonzero) digits is 181440, while the sum is 38.

The spelling of 66003472253 in words is "sixty-six billion, three million, four hundred seventy-two thousand, two hundred fifty-three".