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13530111461 = 21164123751
BaseRepresentation
bin11001001100111010…
…10001110111100101
31021220221021212200022
430212131101313211
5210202202031321
610114325124525
7656201023046
oct144635216745
937827255608
1013530111461
115813438aa9
122757259745
13137816a719
14924d1c8cd
15542c66dab
hex326751de5

13530111461 has 4 divisors (see below), whose sum is σ = 13594235424. Its totient is φ = 13465987500.

The previous prime is 13530111449. The next prime is 13530111473. The reversal of 13530111461 is 16411103531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (13530111449) and next prime (13530111473).

It is a cyclic number.

It is not a de Polignac number, because 13530111461 - 230 = 12456369637 is a prime.

It is a super-2 number, since 2×135301114612 (a number of 21 digits) contains 22 as substring.

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 13530111461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13530111401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32061665 + ... + 32062086.

It is an arithmetic number, because the mean of its divisors is an integer number (3398558856).

Almost surely, 213530111461 is an apocalyptic number.

It is an amenable number.

13530111461 is a deficient number, since it is larger than the sum of its proper divisors (64123963).

13530111461 is an equidigital number, since it uses as much as digits as its factorization.

13530111461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64123962.

The product of its (nonzero) digits is 1080, while the sum is 26.

Adding to 13530111461 its reverse (16411103531), we get a palindrome (29941214992).

The spelling of 13530111461 in words is "thirteen billion, five hundred thirty million, one hundred eleven thousand, four hundred sixty-one".

Divisors: 1 211 64123751 13530111461