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12854913855 = 3574322912433
BaseRepresentation
bin10111111100011011…
…00110101100111111
31020011212210021200120
423332031212230333
5202311324220410
65523325230023
7633361651650
oct137615465477
936155707616
1012854913855
1154a729a053
1225a9102313
13129b303604
1489d39d527
15503843570
hex2fe366b3f

12854913855 has 64 divisors (see below), whose sum is σ = 24159759360. Its totient is φ = 5714343936.

The previous prime is 12854913823. The next prime is 12854913859. The reversal of 12854913855 is 55831945821.

It is not a de Polignac number, because 12854913855 - 25 = 12854913823 is a prime.

It is a super-2 number, since 2×128549138552 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12854913798 and 12854913807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12854913859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1027719 + ... + 1040151.

It is an arithmetic number, because the mean of its divisors is an integer number (377496240).

Almost surely, 212854913855 is an apocalyptic number.

12854913855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12854913855 is a deficient number, since it is larger than the sum of its proper divisors (11304845505).

12854913855 is a wasteful number, since it uses less digits than its factorization.

12854913855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12720.

The product of its digits is 1728000, while the sum is 51.

The spelling of 12854913855 in words is "twelve billion, eight hundred fifty-four million, nine hundred thirteen thousand, eight hundred fifty-five".

Divisors: 1 3 5 7 15 21 35 43 105 129 215 229 301 645 687 903 1145 1505 1603 3435 4515 4809 8015 9847 12433 24045 29541 37299 49235 62165 68929 87031 147705 186495 206787 261093 344645 435155 534619 1033935 1305465 1603857 2673095 2847157 3742333 8019285 8541471 11226999 14235785 18711665 19930099 42707355 56134995 59790297 99650495 122427751 298951485 367283253 612138755 856994257 1836416265 2570982771 4284971285 12854913855