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13581134789 = 372851128747
BaseRepresentation
bin11001010010111111…
…11010101111000101
31022001111022010112012
430221133322233011
5210303232303124
610123350504005
7660360512105
oct145137725705
938044263465
1013581134789
11583a218642
122770365005
1313858c3841
1492ba01205
15547494e0e
hex3297fabc5

13581134789 has 8 divisors (see below), whose sum is σ = 13953193248. Its totient is φ = 13209339600.

The previous prime is 13581134767. The next prime is 13581134807. The reversal of 13581134789 is 98743118531.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13581134789 - 28 = 13581134533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13581134759) 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, 41114 + ... + 169860.

It is an arithmetic number, because the mean of its divisors is an integer number (1744149156).

Almost surely, 213581134789 is an apocalyptic number.

It is an amenable number.

13581134789 is a deficient number, since it is larger than the sum of its proper divisors (372058459).

13581134789 is a wasteful number, since it uses less digits than its factorization.

13581134789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131635.

The product of its digits is 725760, while the sum is 50.

The spelling of 13581134789 in words is "thirteen billion, five hundred eighty-one million, one hundred thirty-four thousand, seven hundred eighty-nine".

Divisors: 1 37 2851 105487 128747 4763639 367057697 13581134789