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12746381097 = 319631354391
BaseRepresentation
bin10111101111011111…
…00101011100101001
31012220022120020201210
423313233211130221
5202101033143342
65504451103333
7630603310632
oct136757453451
935808506653
1012746381097
115450aaa85a
1225788a1b49
131281993048
1488cbca889
154e905579c
hex2f7be5729

12746381097 has 16 divisors (see below), whose sum is σ = 17918059520. Its totient is φ = 8037565200.

The previous prime is 12746381083. The next prime is 12746381117. The reversal of 12746381097 is 79018364721.

It is a happy number.

It is not a de Polignac number, because 12746381097 - 212 = 12746377001 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12746381027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141229 + ... + 213162.

It is an arithmetic number, because the mean of its divisors is an integer number (1119878720).

Almost surely, 212746381097 is an apocalyptic number.

It is an amenable number.

12746381097 is a deficient number, since it is larger than the sum of its proper divisors (5171678423).

12746381097 is a wasteful number, since it uses less digits than its factorization.

12746381097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355044.

The product of its (nonzero) digits is 508032, while the sum is 48.

The spelling of 12746381097 in words is "twelve billion, seven hundred forty-six million, three hundred eighty-one thousand, ninety-seven".

Divisors: 1 3 19 57 631 1893 11989 35967 354391 1063173 6733429 20200287 223620721 670862163 4248793699 12746381097