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13521124343 = 29479973373
BaseRepresentation
bin11001001011110101…
…11111101111110111
31021220022101021200002
430211322333233313
5210142401434333
610113404341515
7656031442406
oct144572775767
937808337602
1013521124343
11580935a931
12275424489b
131376341bbc
14923a5d63d
1554208e0e8
hex325ebfbf7

13521124343 has 8 divisors (see below), whose sum is σ = 14016585600. Its totient is φ = 13027610848.

The previous prime is 13521124321. The next prime is 13521124363. The reversal of 13521124343 is 34342112531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13521124343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13521124363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472796 + ... + 500577.

It is an arithmetic number, because the mean of its divisors is an integer number (1752073200).

Almost surely, 213521124343 is an apocalyptic number.

13521124343 is a deficient number, since it is larger than the sum of its proper divisors (495461257).

13521124343 is an equidigital number, since it uses as much as digits as its factorization.

13521124343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973881.

The product of its digits is 8640, while the sum is 29.

Adding to 13521124343 its reverse (34342112531), we get a palindrome (47863236874).

The spelling of 13521124343 in words is "thirteen billion, five hundred twenty-one million, one hundred twenty-four thousand, three hundred forty-three".

Divisors: 1 29 479 13891 973373 28227817 466245667 13521124343