Search a number
-
+
80068316161 = 2771009286477
BaseRepresentation
bin100101010010001110…
…0011000110000000001
321122200002122220011011
41022210130120300001
52302434442104121
6100441033520521
75533111313041
oct1124434306001
9248602586134
1080068316161
1130a58528019
1213626873141
137720334092
143c37c7d721
1521394b57e1
hex12a4718c01

80068316161 has 8 divisors (see below), whose sum is σ = 80437292840. Its totient is φ = 79699915008.

The previous prime is 80068316149. The next prime is 80068316171. The reversal of 80068316161 is 16161386008.

It can be written as a sum of positive squares in 4 ways, for example, as 8000229136 + 72068087025 = 89444^2 + 268455^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 80068316161 - 217 = 80068185089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80068316171) 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 7 ways as a sum of consecutive naturals, for example, 136255 + ... + 422731.

It is an arithmetic number, because the mean of its divisors is an integer number (10054661605).

Almost surely, 280068316161 is an apocalyptic number.

It is an amenable number.

80068316161 is a deficient number, since it is larger than the sum of its proper divisors (368976679).

80068316161 is a wasteful number, since it uses less digits than its factorization.

80068316161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287763.

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 80068316161 in words is "eighty billion, sixty-eight million, three hundred sixteen thousand, one hundred sixty-one".

Divisors: 1 277 1009 279493 286477 79354129 289055293 80068316161