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12547677137 = 71263671969
BaseRepresentation
bin10111010111110011…
…00101101111010001
31012101110200001010212
423223321211233101
5201144201132022
65433032133505
7622641332042
oct135371455721
935343601125
1012547677137
115359922606
122522237295
13124c770938
148706648c9
154d68a53e2
hex2ebe65bd1

12547677137 has 8 divisors (see below), whose sum is σ = 12772805760. Its totient is φ = 12323893120.

The previous prime is 12547677119. The next prime is 12547677143. The reversal of 12547677137 is 73177674521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12547677137 - 26 = 12547677073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12547677157) 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, 317312 + ... + 354657.

It is an arithmetic number, because the mean of its divisors is an integer number (1596600720).

Almost surely, 212547677137 is an apocalyptic number.

It is an amenable number.

12547677137 is a deficient number, since it is larger than the sum of its proper divisors (225128623).

12547677137 is an equidigital number, since it uses as much as digits as its factorization.

12547677137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672303.

The product of its digits is 1728720, while the sum is 50.

The spelling of 12547677137 in words is "twelve billion, five hundred forty-seven million, six hundred seventy-seven thousand, one hundred thirty-seven".

Divisors: 1 71 263 18673 671969 47709799 176727847 12547677137