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11404404001 = 55720474693
BaseRepresentation
bin10101001111100000…
…10110010100100001
31002102210101202020101
422213300112110201
5141324011412001
65123351542401
7552416556154
oct124760262441
932383352211
1011404404001
114922541581
12226338aa01
1310c994b663
147a289dc9b
1546b322a01
hex2a7c16521

11404404001 has 4 divisors (see below), whose sum is σ = 11424879252. Its totient is φ = 11383928752.

The previous prime is 11404403993. The next prime is 11404404061. The reversal of 11404404001 is 10040440411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10040440411 = 65717152783.

It can be written as a sum of positive squares in 2 ways, for example, as 392000401 + 11012403600 = 19799^2 + 104940^2 .

It is a cyclic number.

It is not a de Polignac number, because 11404404001 - 23 = 11404403993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11404404001.

It is not an unprimeable number, because it can be changed into a prime (11404404061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10236790 + ... + 10237903.

It is an arithmetic number, because the mean of its divisors is an integer number (2856219813).

Almost surely, 211404404001 is an apocalyptic number.

It is an amenable number.

11404404001 is a deficient number, since it is larger than the sum of its proper divisors (20475251).

11404404001 is an equidigital number, since it uses as much as digits as its factorization.

11404404001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20475250.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 11404404001 its reverse (10040440411), we get a palindrome (21444844412).

The spelling of 11404404001 in words is "eleven billion, four hundred four million, four hundred four thousand, one".

Divisors: 1 557 20474693 11404404001