66657653308 has 12 divisors (see below), whose sum is σ = 116746282800. Its totient is φ = 33301572512.

The previous prime is 66657653303. The next prime is 66657653329. The reversal of 66657653308 is 80335675666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66657653303) 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 3 ways as a sum of consecutive naturals, for example, 6808033 + ... + 6817816.

It is an arithmetic number, because the mean of its divisors is an integer number (9728856900).

Almost surely, 2^66657653308 is an apocalyptic number.

It is an amenable number.

66657653308 is a deficient number, since it is larger than the sum of its proper divisors (50088629492).

66657653308 is a wasteful number, since it uses less digits than its factorization.

66657653308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13627076 (or 13627074 counting only the distinct ones).

The product of its (nonzero) digits is 16329600, while the sum is 55.

The spelling of 66657653308 in words is "sixty-six billion, six hundred fifty-seven million, six hundred fifty-three thousand, three hundred eight".