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13540223154 = 2319971130047
BaseRepresentation
bin11001001110000111…
…10110100010110010
31021221122022121022110
430213003312202302
5210212244120104
610115325550150
7656352666153
oct144703664262
937848277273
1013540223154
115819115077
12275a715356
13137a29b083
149263d192a
15543ab2e89
hex3270f68b2

13540223154 has 16 divisors (see below), whose sum is σ = 27094030848. Its totient is φ = 4511143632.

The previous prime is 13540223153. The next prime is 13540223197. The reversal of 13540223154 is 45132204531.

13540223154 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13540223153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 553042 + ... + 577005.

It is an arithmetic number, because the mean of its divisors is an integer number (1693376928).

Almost surely, 213540223154 is an apocalyptic number.

13540223154 is an abundant number, since it is smaller than the sum of its proper divisors (13553807694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13540223154 is a wasteful number, since it uses less digits than its factorization.

13540223154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132049.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 13540223154 its reverse (45132204531), we get a palindrome (58672427685).

The spelling of 13540223154 in words is "thirteen billion, five hundred forty million, two hundred twenty-three thousand, one hundred fifty-four".

Divisors: 1 2 3 6 1997 3994 5991 11982 1130047 2260094 3390141 6780282 2256703859 4513407718 6770111577 13540223154