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12880356333 = 3131635213889
BaseRepresentation
bin10111111111011101…
…01010001111101101
31020020122122220012120
423333232222033231
5202334332400313
65530034423153
7634121136165
oct137756521755
936218586176
1012880356333
11550a697399
1225b5731ab9
1312a3671030
148a29035a5
15505bbbd23
hex2ffbaa3ed

12880356333 has 32 divisors (see below), whose sum is σ = 18648846720. Its totient is φ = 7860602880.

The previous prime is 12880356277. The next prime is 12880356341. The reversal of 12880356333 is 33365308821.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2k-12880356333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12880352333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3310053 + ... + 3313941.

It is an arithmetic number, because the mean of its divisors is an integer number (582776460).

Almost surely, 212880356333 is an apocalyptic number.

12880356333 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12880356333 is a deficient number, since it is larger than the sum of its proper divisors (5768490387).

12880356333 is a wasteful number, since it uses less digits than its factorization.

12880356333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4589.

The product of its (nonzero) digits is 311040, while the sum is 42.

It can be divided in two parts, 128803 and 56333, that added together give a triangular number (185136 = T608).

The spelling of 12880356333 in words is "twelve billion, eight hundred eighty million, three hundred fifty-six thousand, three hundred thirty-three".

Divisors: 1 3 13 39 163 489 521 1563 2119 3889 6357 6773 11667 20319 50557 84923 151671 254769 633907 1103999 1901721 2026169 3311997 6078507 8240791 24722373 26340197 79020591 330265547 990796641 4293452111 12880356333