Search a number
-
+
11011001001 = 3711138294423
BaseRepresentation
bin10100100000100111…
…01000101010101001
31001102101010210202220
422100103220222221
5140022304013001
65020335544253
7536601651510
oct122023505251
931371123686
1011011001001
114740472030
12217368b089
1310662a9a10
14766535677
15446a13c36
hex2904e8aa9

11011001001 has 64 divisors (see below), whose sum is σ = 19740241920. Its totient is φ = 5272439040.

The previous prime is 11011000969. The next prime is 11011001059. The reversal of 11011001001 is 10010011011.

It is not a de Polignac number, because 11011001001 - 25 = 11011000969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11011011001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2487276 + ... + 2491698.

It is an arithmetic number, because the mean of its divisors is an integer number (308441280).

Almost surely, 211011001001 is an apocalyptic number.

11011001001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11011001001 is a deficient number, since it is larger than the sum of its proper divisors (8729240919).

11011001001 is a wasteful number, since it uses less digits than its factorization.

11011001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5286.

The product of its (nonzero) digits is 1, while the sum is 6.

Adding to 11011001001 its reverse (10010011011), we get a palindrome (21021012012).

The spelling of 11011001001 in words is "eleven billion, eleven million, one thousand, one".

Divisors: 1 3 7 11 13 21 33 39 77 91 143 231 273 429 829 1001 2487 3003 4423 5803 9119 10777 13269 17409 27357 30961 32331 48653 57499 63833 75439 92883 118547 145959 172497 191499 226317 340571 355641 402493 632489 829829 1021713 1207479 1897467 2489487 3666667 4427423 11000001 13282269 25666669 40333337 47666671 77000007 121000011 143000013 282333359 333666697 524333381 847000077 1001000091 1573000143 3670333667 11011001001