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12587925138805 = 561187122058731
BaseRepresentation
bin1011011100101101101011…
…0011100110110101110101
31122120101122010221122200101
42313023122303212311311
53122220032313420210
642434451334114101
72436306343152412
oct267133263466565
948511563848611
1012587925138805
114013566635475
1214b375a7ab931
137040618341c3
1431738a319109
1516c692b81a3a
hexb72dace6d75

12587925138805 has 16 divisors (see below), whose sum is σ = 15361348025088. Its totient is φ = 9899958024000.

The previous prime is 12587925138787. The next prime is 12587925138847. The reversal of 12587925138805 is 50883152978521.

It is not a de Polignac number, because 12587925138805 - 25 = 12587925138773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10458711 + ... + 11600020.

It is an arithmetic number, because the mean of its divisors is an integer number (960084251568).

Almost surely, 212587925138805 is an apocalyptic number.

It is an amenable number.

12587925138805 is a deficient number, since it is larger than the sum of its proper divisors (2773422886283).

12587925138805 is a wasteful number, since it uses less digits than its factorization.

12587925138805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22060668.

The product of its (nonzero) digits is 48384000, while the sum is 64.

The spelling of 12587925138805 in words is "twelve trillion, five hundred eighty-seven billion, nine hundred twenty-five million, one hundred thirty-eight thousand, eight hundred five".

Divisors: 1 5 61 305 1871 9355 114131 570655 22058731 110293655 1345582591 6727912955 41271885701 206359428505 2517585027761 12587925138805