66313557273 has 8 divisors (see below), whose sum is σ = 88876201888. Its totient is φ = 43979975424.

The previous prime is 66313557253. The next prime is 66313557287. The reversal of 66313557273 is 37275531366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66313557273 - 2⁵ = 66313557241 is a prime.

It is a super-4 number, since 4×66313557273⁴ (a number of 44 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66313557253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57265015 + ... + 57266172.

It is an arithmetic number, because the mean of its divisors is an integer number (11109525236).

Almost surely, 2^66313557273 is an apocalyptic number.

It is an amenable number.

66313557273 is a deficient number, since it is larger than the sum of its proper divisors (22562644615).

66313557273 is a wasteful number, since it uses less digits than its factorization.

66313557273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114531383.

The product of its digits is 2381400, while the sum is 48.

The spelling of 66313557273 in words is "sixty-six billion, three hundred thirteen million, five hundred fifty-seven thousand, two hundred seventy-three".