Search a number
-
+
12782068013 = 1113233383627
BaseRepresentation
bin10111110011101111…
…01110000100101101
31012222210201022222102
423321313232010231
5202134202134023
65512204024445
7631515533261
oct137167560455
935883638872
1012782068013
11546a164980
122588832125
1312891a9670
1489383a0a1
154ec254628
hex2f9dee12d

12782068013 has 16 divisors (see below), whose sum is σ = 15081183936. Its totient is φ = 10680147840.

The previous prime is 12782067983. The next prime is 12782068021. The reversal of 12782068013 is 31086028721.

It is a cyclic number.

It is not a de Polignac number, because 12782068013 - 216 = 12782002477 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12782068513) 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, 158495 + ... + 225132.

It is an arithmetic number, because the mean of its divisors is an integer number (942573996).

Almost surely, 212782068013 is an apocalyptic number.

12782068013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12782068013 is a deficient number, since it is larger than the sum of its proper divisors (2299115923).

12782068013 is a wasteful number, since it uses less digits than its factorization.

12782068013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383884.

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 12782068013 in words is "twelve billion, seven hundred eighty-two million, sixty-eight thousand, thirteen".

Divisors: 1 11 13 143 233 2563 3029 33319 383627 4219897 4987151 54858661 89385091 983236001 1162006183 12782068013