66013596473 has 6 divisors (see below), whose sum is σ = 72560399562. Its totient is φ = 60012360320.

The previous prime is 66013596469. The next prime is 66013596553. The reversal of 66013596473 is 37469531066.

It can be written as a sum of positive squares in only one way, i.e., 65988875689 + 24720784 = 256883^2 + 4972^2 .

It is not a de Polignac number, because 66013596473 - 2² = 66013596469 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66013596973) 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 5 ways as a sum of consecutive naturals, for example, 272783336 + ... + 272783577.

It is an arithmetic number, because the mean of its divisors is an integer number (12093399927).

Almost surely, 2^66013596473 is an apocalyptic number.

It is an amenable number.

66013596473 is a deficient number, since it is larger than the sum of its proper divisors (6546803089).

66013596473 is a wasteful number, since it uses less digits than its factorization.

66013596473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545566935 (or 545566924 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 50.

The spelling of 66013596473 in words is "sixty-six billion, thirteen million, five hundred ninety-six thousand, four hundred seventy-three".