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12997568095 = 52599513619
BaseRepresentation
bin11000001101011011…
…10010011001011111
31020112211012212111221
430012231302121133
5203104334134340
65545422554211
7640043335351
oct140655623137
936484185457
1012997568095
11556a874316
122628a38967
1312c1a2cac5
148b42d50d1
1551112144a
hex306b7265f

12997568095 has 4 divisors (see below), whose sum is σ = 15597081720. Its totient is φ = 10398054472.

The previous prime is 12997568081. The next prime is 12997568117. The reversal of 12997568095 is 59086579921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59086579921 = 71832205351.

It is a cyclic number.

It is not a de Polignac number, because 12997568095 - 25 = 12997568063 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1299756805 + ... + 1299756814.

It is an arithmetic number, because the mean of its divisors is an integer number (3899270430).

Almost surely, 212997568095 is an apocalyptic number.

12997568095 is a deficient number, since it is larger than the sum of its proper divisors (2599513625).

12997568095 is an equidigital number, since it uses as much as digits as its factorization.

12997568095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2599513624.

The product of its (nonzero) digits is 12247200, while the sum is 61.

The spelling of 12997568095 in words is "twelve billion, nine hundred ninety-seven million, five hundred sixty-eight thousand, ninety-five".

Divisors: 1 5 2599513619 12997568095