80606181069 has 18 divisors (see below), whose sum is σ = 117227687850. Its totient is φ = 53369915328.

The previous prime is 80606181031. The next prime is 80606181079. The reversal of 80606181069 is 96018160608.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 48824205444 + 31781975625 = 220962^2 + 178275^2 .

It is not a de Polignac number, because 80606181069 - 2¹⁶ = 80606115533 is a prime.

It is a super-2 number, since 2×80606181069² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80606181079) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10392897 + ... + 10400649.

It is an arithmetic number, because the mean of its divisors is an integer number (6512649325).

Almost surely, 2^80606181069 is an apocalyptic number.

It is an amenable number.

80606181069 is a deficient number, since it is larger than the sum of its proper divisors (36621506781).

80606181069 is an frugal number, since it uses more digits than its factorization.

80606181069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15661 (or 7905 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 80606181069 in words is "eighty billion, six hundred six million, one hundred eighty-one thousand, sixty-nine".