66580061273 has 8 divisors (see below), whose sum is σ = 72659598816. Its totient is φ = 60504991200.

The previous prime is 66580061237. The next prime is 66580061287. The reversal of 66580061273 is 37216008566.

66580061273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66580061273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66580061203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1085663 + ... + 1145348.

It is an arithmetic number, because the mean of its divisors is an integer number (9082449852).

Almost surely, 2^66580061273 is an apocalyptic number.

It is an amenable number.

66580061273 is a deficient number, since it is larger than the sum of its proper divisors (6079537543).

66580061273 is a wasteful number, since it uses less digits than its factorization.

66580061273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233735.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 66580061273 in words is "sixty-six billion, five hundred eighty million, sixty-one thousand, two hundred seventy-three".