85766369261 has 8 divisors (see below), whose sum is σ = 90787176480. Its totient is φ = 80883118512.

The previous prime is 85766369251. The next prime is 85766369281. The reversal of 85766369261 is 16296366758.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85766369261 is a prime.

It is a super-2 number, since 2×85766369261² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 85766369261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85766369251) 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 7 ways as a sum of consecutive naturals, for example, 34387835 + ... + 34390328.

It is an arithmetic number, because the mean of its divisors is an integer number (11348397060).

Almost surely, 2^85766369261 is an apocalyptic number.

It is an amenable number.

85766369261 is a deficient number, since it is larger than the sum of its proper divisors (5020807219).

85766369261 is a wasteful number, since it uses less digits than its factorization.

85766369261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68778235.

The product of its digits is 19595520, while the sum is 59.

The spelling of 85766369261 in words is "eighty-five billion, seven hundred sixty-six million, three hundred sixty-nine thousand, two hundred sixty-one".