66533296677 has 8 divisors (see below), whose sum is σ = 89540138016. Its totient is φ = 43940993232.

The previous prime is 66533296639. The next prime is 66533296703. The reversal of 66533296677 is 77669233566.

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

It is not a de Polignac number, because 66533296677 - 2⁷ = 66533296549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66533296677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66533291677) 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, 103634098 + ... + 103634739.

It is an arithmetic number, because the mean of its divisors is an integer number (11192517252).

Almost surely, 2^66533296677 is an apocalyptic number.

It is an amenable number.

66533296677 is a deficient number, since it is larger than the sum of its proper divisors (23006841339).

66533296677 is a wasteful number, since it uses less digits than its factorization.

66533296677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207268947.

The product of its digits is 51438240, while the sum is 60.

The spelling of 66533296677 in words is "sixty-six billion, five hundred thirty-three million, two hundred ninety-six thousand, six hundred seventy-seven".