Search a number
-
+
12071188660 = 2252113285641
BaseRepresentation
bin10110011110111111…
…11011100010110100
31011011021001220211111
423033133323202310
5144210211014120
65313451244404
7605064260566
oct131737734264
934137056744
1012071188660
115134964783
12240a749704
1311a4b2b3ab
1482726d336
154a9b3375a
hex2cf7fb8b4

12071188660 has 24 divisors (see below), whose sum is σ = 25361581896. Its totient is φ = 4826173440.

The previous prime is 12071188643. The next prime is 12071188709. The reversal of 12071188660 is 6688117021.

It can be written as a sum of positive squares in 4 ways, for example, as 737882896 + 11333305764 = 27164^2 + 106458^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100561 + ... + 185080.

It is an arithmetic number, because the mean of its divisors is an integer number (1056732579).

Almost surely, 212071188660 is an apocalyptic number.

12071188660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12071188660 is an abundant number, since it is smaller than the sum of its proper divisors (13290393236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12071188660 is a wasteful number, since it uses less digits than its factorization.

12071188660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287763 (or 287761 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 40.

The spelling of 12071188660 in words is "twelve billion, seventy-one million, one hundred eighty-eight thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 2113 4226 8452 10565 21130 42260 285641 571282 1142564 1428205 2856410 5712820 603559433 1207118866 2414237732 3017797165 6035594330 12071188660