Search a number
-
+
12885641273231 = 15978068654523
BaseRepresentation
bin1011101110000010110000…
…0100100001111110001111
31200121212002111101021211122
42323200230010201332033
53142104243131220411
643223325404111155
72466646126432616
oct273405404417617
950555074337748
1012885641273231
114118851630761
1215413a72354bb
1372615944975c
1432794ddcc87d
151752b9aa99db
hexbb82c121f8f

12885641273231 has 4 divisors (see below), whose sum is σ = 12893709929352. Its totient is φ = 12877572617112.

The previous prime is 12885641273179. The next prime is 12885641273233. The reversal of 12885641273231 is 13237214658821.

12885641273231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12885641273231 - 214 = 12885641256847 is a prime.

It is a super-2 number, since 2×128856412732312 (a number of 27 digits) contains 22 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 (12885641273233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4034325665 + ... + 4034328858.

It is an arithmetic number, because the mean of its divisors is an integer number (3223427482338).

Almost surely, 212885641273231 is an apocalyptic number.

12885641273231 is a deficient number, since it is larger than the sum of its proper divisors (8068656121).

12885641273231 is an equidigital number, since it uses as much as digits as its factorization.

12885641273231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8068656120.

The product of its digits is 3870720, while the sum is 53.

The spelling of 12885641273231 in words is "twelve trillion, eight hundred eighty-five billion, six hundred forty-one million, two hundred seventy-three thousand, two hundred thirty-one".

Divisors: 1 1597 8068654523 12885641273231