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13012799079 = 372331918443
BaseRepresentation
bin11000001111001111…
…11000111001100111
31020120212212200111110
430013213320321213
5203122234032304
65551125240103
7640316652510
oct140747707147
936525780443
1013012799079
115578427605
122631b63033
1312c4c33617
148b633ba07
1551262e289
hex3079f8e67

13012799079 has 32 divisors (see below), whose sum is σ = 20700094464. Its totient is φ = 7109514720.

The previous prime is 13012799077. The next prime is 13012799081. The reversal of 13012799079 is 97099721031.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13012799077) and next prime (13012799081).

It is not a de Polignac number, because 13012799079 - 21 = 13012799077 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 zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13012799077) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1537032 + ... + 1545474.

It is an arithmetic number, because the mean of its divisors is an integer number (646877952).

Almost surely, 213012799079 is an apocalyptic number.

13012799079 is a deficient number, since it is larger than the sum of its proper divisors (7687295385).

13012799079 is a wasteful number, since it uses less digits than its factorization.

13012799079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11667.

The product of its (nonzero) digits is 214326, while the sum is 48.

The spelling of 13012799079 in words is "thirteen billion, twelve million, seven hundred ninety-nine thousand, seventy-nine".

Divisors: 1 3 7 21 23 69 161 483 3191 8443 9573 22337 25329 59101 67011 73393 177303 194189 220179 513751 582567 1359323 1541253 4077969 26941613 80824839 188591291 565773873 619657099 1858971297 4337599693 13012799079