Base | Representation |
---|---|
bin | 10111110111000101… |
… | …00011001000000011 |
3 | 1020001202102010000120 |
4 | 23323202203020003 |
5 | 202213334310304 |
6 | 5515044151323 |
7 | 632305551243 |
oct | 137342431003 |
9 | 36052363016 |
10 | 12810072579 |
11 | 5483a52147 |
12 | 2596098543 |
13 | 1291c33305 |
14 | 897449b23 |
15 | 4ee9370d9 |
hex | 2fb8a3203 |
12810072579 has 8 divisors (see below), whose sum is σ = 17095727952. Its totient is φ = 8532232800.
The previous prime is 12810072559. The next prime is 12810072629. The reversal of 12810072579 is 97527001821.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 12810072579 - 28 = 12810072323 is a prime.
It is a super-2 number, since 2×128100725792 (a number of 21 digits) contains 22 as substring.
It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a self number, because there is not a number n which added to its sum of digits gives 12810072579.
It is not an unprimeable number, because it can be changed into a prime (12810072559) 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, 1950072 + ... + 1956629.
It is an arithmetic number, because the mean of its divisors is an integer number (2136965994).
Almost surely, 212810072579 is an apocalyptic number.
12810072579 is a deficient number, since it is larger than the sum of its proper divisors (4285655373).
12810072579 is a wasteful number, since it uses less digits than its factorization.
12810072579 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3907797.
The product of its (nonzero) digits is 70560, while the sum is 42.
The spelling of 12810072579 in words is "twelve billion, eight hundred ten million, seventy-two thousand, five hundred seventy-nine".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.070 sec. • engine limits •