665877617412733 has 16 divisors (see below), whose sum is σ = 730141932104640. Its totient is φ = 602239896979200.

The previous prime is 665877617412731. The next prime is 665877617412797. The reversal of 665877617412733 is 337214716778566.

It is a cyclic number.

It is not a de Polignac number, because 665877617412733 - 2¹ = 665877617412731 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665877617412731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120546810 + ... + 125949547.

It is an arithmetic number, because the mean of its divisors is an integer number (45633870756540).

Almost surely, 2^{665877617412733} is an apocalyptic number.

It is an amenable number.

665877617412733 is a deficient number, since it is larger than the sum of its proper divisors (64264314691907).

665877617412733 is a wasteful number, since it uses less digits than its factorization.

665877617412733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246497628.

The product of its digits is 1493614080, while the sum is 73.

The spelling of 665877617412733 in words is "six hundred sixty-five trillion, eight hundred seventy-seven billion, six hundred seventeen million, four hundred twelve thousand, seven hundred thirty-three".