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12907255109 = 72696854623
BaseRepresentation
bin11000000010101010…
…10001010101000101
31020022112021111101112
430001111101111011
5202413224130414
65532435134405
7634565600240
oct140125212505
936275244345
1012907255109
115523899891
122602744405
1312a90cb578
148a6306257
15508231d3e
hex301551545

12907255109 has 8 divisors (see below), whose sum is σ = 14805987840. Its totient is φ = 11022232176.

The previous prime is 12907255091. The next prime is 12907255159. The reversal of 12907255109 is 90155270921.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12907255109 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12907255159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3425429 + ... + 3429194.

It is an arithmetic number, because the mean of its divisors is an integer number (1850748480).

Almost surely, 212907255109 is an apocalyptic number.

It is an amenable number.

12907255109 is a deficient number, since it is larger than the sum of its proper divisors (1898732731).

12907255109 is an equidigital number, since it uses as much as digits as its factorization.

12907255109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6854899.

The product of its (nonzero) digits is 56700, while the sum is 41.

The spelling of 12907255109 in words is "twelve billion, nine hundred seven million, two hundred fifty-five thousand, one hundred nine".

Divisors: 1 7 269 1883 6854623 47982361 1843893587 12907255109