66733607565489 has 16 divisors (see below), whose sum is σ = 89096023933632. Its totient is φ = 44430167002368.

The previous prime is 66733607565479. The next prime is 66733607565517. The reversal of 66733607565489 is 98456570633766.

66733607565489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66733607565489 - 2⁴⁵ = 31549235476657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66733607565489.

It is not an unprimeable number, because it can be changed into a prime (66733607565439) 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 15 ways as a sum of consecutive naturals, for example, 3069909 + ... + 11953725.

It is an arithmetic number, because the mean of its divisors is an integer number (5568501495852).

Almost surely, 2^{66733607565489} is an apocalyptic number.

It is an amenable number.

66733607565489 is a deficient number, since it is larger than the sum of its proper divisors (22362416368143).

66733607565489 is a wasteful number, since it uses less digits than its factorization.

66733607565489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8887136.

The product of its (nonzero) digits is 4115059200, while the sum is 75.

The spelling of 66733607565489 in words is "sixty-six trillion, seven hundred thirty-three billion, six hundred seven million, five hundred sixty-five thousand, four hundred eighty-nine".