Search a number
-
+
80808140471 = 254331776697
BaseRepresentation
bin100101101000010001…
…0100101111010110111
321201120122202212022112
41023100202211322313
52310443340443341
6101042302521235
75560333601162
oct1132042457267
9251518685275
1080808140471
11312a80a7a73
12137b259621b
13780a6a8046
143ca8222ad9
15217e402aeb
hex12d08a5eb7

80808140471 has 4 divisors (see below), whose sum is σ = 80839919712. Its totient is φ = 80776361232.

The previous prime is 80808140467. The next prime is 80808140519. The reversal of 80808140471 is 17404180808.

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

It is a cyclic number.

It is not a de Polignac number, because 80808140471 - 22 = 80808140467 is a prime.

It is a super-3 number, since 3×808081404713 (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80808140971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15885806 + ... + 15890891.

It is an arithmetic number, because the mean of its divisors is an integer number (20209979928).

Almost surely, 280808140471 is an apocalyptic number.

80808140471 is a deficient number, since it is larger than the sum of its proper divisors (31779241).

80808140471 is a wasteful number, since it uses less digits than its factorization.

80808140471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31779240.

The product of its (nonzero) digits is 57344, while the sum is 41.

The spelling of 80808140471 in words is "eighty billion, eight hundred eight million, one hundred forty thousand, four hundred seventy-one".

Divisors: 1 2543 31776697 80808140471