Search a number
-
+
6861208856848 = 24625768535329
BaseRepresentation
bin110001111010111111111…
…1010101010100100010000
3220021220222102221101110221
41203311333322222210100
51344403223431404343
622331555033402424
71305464103004663
oct143657772524420
926256872841427
106861208856848
11220590558a255
129298b8b69414
133aa01733c258
1419a1273a16da
15bd720bb75ed
hex63d7feaa910

6861208856848 has 20 divisors (see below), whose sum is σ = 13295716949340. Its totient is φ = 3430056095744.

The previous prime is 6861208856833. The next prime is 6861208856851. The reversal of 6861208856848 is 8486588021686.

It can be written as a sum of positive squares in 2 ways, for example, as 4515251007744 + 2345957849104 = 2124912^2 + 1531652^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34167553 + ... + 34367776.

It is an arithmetic number, because the mean of its divisors is an integer number (664785847467).

Almost surely, 26861208856848 is an apocalyptic number.

It is an amenable number.

6861208856848 is a deficient number, since it is larger than the sum of its proper divisors (6434508092492).

6861208856848 is a wasteful number, since it uses less digits than its factorization.

6861208856848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68541594 (or 68541588 counting only the distinct ones).

The product of its (nonzero) digits is 283115520, while the sum is 70.

The spelling of 6861208856848 in words is "six trillion, eight hundred sixty-one billion, two hundred eight million, eight hundred fifty-six thousand, eight hundred forty-eight".

Divisors: 1 2 4 8 16 6257 12514 25028 50056 100112 68535329 137070658 274141316 548282632 1096565264 428825553553 857651107106 1715302214212 3430604428424 6861208856848