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12955612845 = 3572331173053
BaseRepresentation
bin11000001000011011…
…01111011010101101
31020102220021022201210
430010031233122231
5203013114102340
65541323425033
7636023615010
oct140415573255
936386238653
1012955612845
11554911875a
122616985179
1312b6130306
148ac8d3377
1550c5d5180
hex30436f6ad

12955612845 has 64 divisors (see below), whose sum is σ = 25517850624. Its totient is φ = 5482287360.

The previous prime is 12955612819. The next prime is 12955612849. The reversal of 12955612845 is 54821655921.

It is not a de Polignac number, because 12955612845 - 28 = 12955612589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12955612794 and 12955612803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12955612849) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11662 + ... + 161391.

It is an arithmetic number, because the mean of its divisors is an integer number (398716416).

Almost surely, 212955612845 is an apocalyptic number.

12955612845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12955612845 is a deficient number, since it is larger than the sum of its proper divisors (12562237779).

12955612845 is a wasteful number, since it uses less digits than its factorization.

12955612845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173122.

The product of its digits is 864000, while the sum is 48.

The spelling of 12955612845 in words is "twelve billion, nine hundred fifty-five million, six hundred twelve thousand, eight hundred forty-five".

Divisors: 1 3 5 7 15 21 23 31 35 69 93 105 115 155 161 217 345 465 483 651 713 805 1085 2139 2415 3255 3565 4991 10695 14973 24955 74865 173053 519159 865265 1211371 2595795 3634113 3980219 5364643 6056855 11940657 16093929 18170565 19901095 26823215 27861533 37552501 59703285 80469645 83584599 112657503 123386789 139307665 187762505 370160367 417922995 563287515 616933945 863707523 1850801835 2591122569 4318537615 12955612845