80629306209 has 9 divisors (see below), whose sum is σ = 116465783889. Its totient is φ = 53752302900.

The previous prime is 80629306157. The next prime is 80629306223. The reversal of 80629306209 is 90260392608.

The square root of 80629306209 is 283953.

It is a perfect power (a square), and thus also a powerful number.

80629306209 is a `hidden beast` number, since 80 + 62 + 9 + 306 + 209 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 80629306209 - 2¹⁵ = 80629273441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80629306259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 804534 + ... + 899184.

Almost surely, 2^80629306209 is an apocalyptic number.

80629306209 is the 283953-rd square number.

80629306209 is the 141977-th centered octagonal number.

It is an amenable number.

80629306209 is a deficient number, since it is larger than the sum of its proper divisors (35836477680).

80629306209 is an frugal number, since it uses more digits than its factorization.

80629306209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189308 (or 94654 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 80629306209 in words is "eighty billion, six hundred twenty-nine million, three hundred six thousand, two hundred nine".