8066769121 has 4 divisors (see below), whose sum is σ = 8066973892. Its totient is φ = 8066564352.

The previous prime is 8066769097. The next prime is 8066769133. The reversal of 8066769121 is 1219676608.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2205335521 + 5861433600 = 46961^2 + 76560^2 .

It is a cyclic number.

It is not a de Polignac number, because 8066769121 - 2²¹ = 8064671969 is a prime.

It is a super-2 number, since 2×8066769121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8066769421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22536 + ... + 129001.

It is an arithmetic number, because the mean of its divisors is an integer number (2016743473).

Almost surely, 2^8066769121 is an apocalyptic number.

It is an amenable number.

8066769121 is a deficient number, since it is larger than the sum of its proper divisors (204771).

8066769121 is a wasteful number, since it uses less digits than its factorization.

8066769121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204770.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 8066769121 is about 89815.1942657811. The cubic root of 8066769121 is about 2005.5486852268.

The spelling of 8066769121 in words is "eight billion, sixty-six million, seven hundred sixty-nine thousand, one hundred twenty-one".