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11001011001001 = 782711503165203
BaseRepresentation
bin1010000000010101111101…
…0110100101011010101001
31102221200112101000211221221
42200011133112211122221
52420220032304013001
635221443352502041
72213540210433160
oct240053726453251
942850471024857
1011001011001001
113561558a06a2a
1212980a03aa921
1361a510a135b8
142a06479483d7
151412653101a1
hexa015f5a56a9

11001011001001 has 16 divisors (see below), whose sum is σ = 12588957149184. Its totient is φ = 9417160270224.

The previous prime is 11001011000929. The next prime is 11001011001007. The reversal of 11001011001001 is 10010011010011.

It is a happy number.

It is not a de Polignac number, because 11001011001001 - 237 = 10863572047529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11001011001007) 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, 66508266 + ... + 66673468.

It is an arithmetic number, because the mean of its divisors is an integer number (786809821824).

Almost surely, 211001011001001 is an apocalyptic number.

It is an amenable number.

11001011001001 is a deficient number, since it is larger than the sum of its proper divisors (1587946148183).

11001011001001 is a wasteful number, since it uses less digits than its factorization.

11001011001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177540.

The product of its (nonzero) digits is 1, while the sum is 7.

Adding to 11001011001001 its reverse (10010011010011), we get a palindrome (21011022011012).

The spelling of 11001011001001 in words is "eleven trillion, one billion, eleven million, one thousand, one".

Divisors: 1 7 827 5789 11503 80521 165203 1156421 9512981 66590867 136622881 956360167 1900330109 13302310763 1571573000143 11001011001001