65166768069 has 32 divisors (see below), whose sum is σ = 95336930304. Its totient is φ = 39352158720.

The previous prime is 65166768061. The next prime is 65166768071. The reversal of 65166768069 is 96086766156.

It is not a de Polignac number, because 65166768069 - 2³ = 65166768061 is a prime.

It is a super-2 number, since 2×65166768069² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65166768061) 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 31 ways as a sum of consecutive naturals, for example, 502764 + ... + 618954.

It is an arithmetic number, because the mean of its divisors is an integer number (2979279072).

Almost surely, 2^65166768069 is an apocalyptic number.

It is an amenable number.

65166768069 is a deficient number, since it is larger than the sum of its proper divisors (30170162235).

65166768069 is a wasteful number, since it uses less digits than its factorization.

65166768069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116477.

The product of its (nonzero) digits is 19595520, while the sum is 60.

The spelling of 65166768069 in words is "sixty-five billion, one hundred sixty-six million, seven hundred sixty-eight thousand, sixty-nine".