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12872851365 = 351178017281
BaseRepresentation
bin10111111110100100…
…00001111110100101
31020020010112121022210
423333102001332211
5202330422220430
65525205514033
7634000300623
oct137722017645
936203477283
1012872851365
115506430840
1225b3112919
1312a1c4401a
148a190c513
155051d82b0
hex2ff481fa5

12872851365 has 16 divisors (see below), whose sum is σ = 22468977216. Its totient is φ = 6241382400.

The previous prime is 12872851363. The next prime is 12872851373. The reversal of 12872851365 is 56315827821.

It is not a de Polignac number, because 12872851365 - 21 = 12872851363 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12872851363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39008476 + ... + 39008805.

It is an arithmetic number, because the mean of its divisors is an integer number (1404311076).

Almost surely, 212872851365 is an apocalyptic number.

12872851365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12872851365 is a deficient number, since it is larger than the sum of its proper divisors (9596125851).

12872851365 is a wasteful number, since it uses less digits than its factorization.

12872851365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78017300.

The product of its digits is 806400, while the sum is 48.

The spelling of 12872851365 in words is "twelve billion, eight hundred seventy-two million, eight hundred fifty-one thousand, three hundred sixty-five".

Divisors: 1 3 5 11 15 33 55 165 78017281 234051843 390086405 858190091 1170259215 2574570273 4290950455 12872851365