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12707798813 = 67189668639
BaseRepresentation
bin10111101010111000…
…11001111100011101
31012210121222001210022
423311130121330131
5202011144030223
65500552121525
7626624336063
oct136534317435
935717861708
1012707798813
115431248376
1225679962a5
1312769a48a8
14887a26033
154e5983ac8
hex2f5719f1d

12707798813 has 4 divisors (see below), whose sum is σ = 12897467520. Its totient is φ = 12518130108.

The previous prime is 12707798767. The next prime is 12707798837. The reversal of 12707798813 is 31889770721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12707798813 - 26 = 12707798749 is a prime.

It is a super-2 number, since 2×127077988132 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12707798863) 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, 94834253 + ... + 94834386.

It is an arithmetic number, because the mean of its divisors is an integer number (3224366880).

Almost surely, 212707798813 is an apocalyptic number.

It is an amenable number.

12707798813 is a deficient number, since it is larger than the sum of its proper divisors (189668707).

12707798813 is an equidigital number, since it uses as much as digits as its factorization.

12707798813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189668706.

The product of its (nonzero) digits is 1185408, while the sum is 53.

The spelling of 12707798813 in words is "twelve billion, seven hundred seven million, seven hundred ninety-eight thousand, eight hundred thirteen".

Divisors: 1 67 189668639 12707798813