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12702125441 = 17389730469
BaseRepresentation
bin10111101010001101…
…10000110110000001
31012210020021211101102
423311012300312001
5202003221003231
65500230344145
7626525166455
oct136506606601
935706254342
1012702125441
115429022935
122565abb055
131275769475
14886d8a665
154e5212acb
hex2f51b0d81

12702125441 has 4 divisors (see below), whose sum is σ = 12702873300. Its totient is φ = 12701377584.

The previous prime is 12702125431. The next prime is 12702125453. The reversal of 12702125441 is 14452120721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14452120721 = 78191184831.

It can be written as a sum of positive squares in 2 ways, for example, as 7044077041 + 5658048400 = 83929^2 + 75220^2 .

It is a cyclic number.

It is not a de Polignac number, because 12702125441 - 218 = 12701863297 is a prime.

It is a super-2 number, since 2×127021254412 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12702125431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347846 + ... + 382623.

It is an arithmetic number, because the mean of its divisors is an integer number (3175718325).

Almost surely, 212702125441 is an apocalyptic number.

It is an amenable number.

12702125441 is a deficient number, since it is larger than the sum of its proper divisors (747859).

12702125441 is an equidigital number, since it uses as much as digits as its factorization.

12702125441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747858.

The product of its (nonzero) digits is 4480, while the sum is 29.

The spelling of 12702125441 in words is "twelve billion, seven hundred two million, one hundred twenty-five thousand, four hundred forty-one".

Divisors: 1 17389 730469 12702125441