Search a number
-
+
485079807681281 = 171491619311826349
BaseRepresentation
bin110111001001011010111000…
…1100111111110001100000001
32100121112011202211110112111102
41232102311301213332030001
51002040021421231300111
64435402330503424145
7204113600556653561
oct15622656147761401
92317464684415442
10485079807681281
1113061a21148248a
12464a3872155055
1317a88aa27b1077
1487addb8d7ada1
153b1308b91913b
hex1b92d719fe301

485079807681281 has 16 divisors (see below), whose sum is σ = 517092962130000. Its totient is φ = 453453593100288.

The previous prime is 485079807681253. The next prime is 485079807681283. The reversal of 485079807681281 is 182186708970584.

It can be written as a sum of positive squares in 8 ways, for example, as 116248397241025 + 368831410440256 = 10781855^2 + 19204984^2 .

It is a cyclic number.

It is not a de Polignac number, because 485079807681281 - 210 = 485079807680257 is a prime.

It is a super-2 number, since 2×4850798076812812 (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 485079807681199 and 485079807681208.

It is not an unprimeable number, because it can be changed into a prime (485079807681283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35103695 + ... + 46930043.

It is an arithmetic number, because the mean of its divisors is an integer number (32318310133125).

Almost surely, 2485079807681281 is an apocalyptic number.

It is an amenable number.

485079807681281 is a deficient number, since it is larger than the sum of its proper divisors (32013154448719).

485079807681281 is a wasteful number, since it uses less digits than its factorization.

485079807681281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11842708.

The product of its (nonzero) digits is 433520640, while the sum is 74.

The spelling of 485079807681281 in words is "four hundred eighty-five trillion, seventy-nine billion, eight hundred seven million, six hundred eighty-one thousand, two hundred eighty-one".

Divisors: 1 17 149 2533 16193 275281 2412757 11826349 41016869 201047933 1762126001 29956142017 191504069357 3255569179069 28534106334193 485079807681281