66277466973 has 20 divisors (see below), whose sum is σ = 99103049628. Its totient is φ = 44142148800.

The previous prime is 66277466939. The next prime is 66277466989. The reversal of 66277466973 is 37966477266.

66277466973 is a `hidden beast` number, since 66 + 27 + 7 + 466 + 97 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 65686101849 + 591365124 = 256293^2 + 24318^2 .

It is not a de Polignac number, because 66277466973 - 2¹⁰ = 66277465949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66277466973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66277466173) 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 19 ways as a sum of consecutive naturals, for example, 312378 + ... + 479723.

Almost surely, 2^66277466973 is an apocalyptic number.

It is an amenable number.

66277466973 is a deficient number, since it is larger than the sum of its proper divisors (32825582655).

66277466973 is a wasteful number, since it uses less digits than its factorization.

66277466973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793146 (or 793137 counting only the distinct ones).

The product of its digits is 96018048, while the sum is 63.

The spelling of 66277466973 in words is "sixty-six billion, two hundred seventy-seven million, four hundred sixty-six thousand, nine hundred seventy-three".