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12907916217292 = 2241331304178193
BaseRepresentation
bin1011101111010101101111…
…0000101100101111001100
31200200222120212121200122211
42323311123300230233030
53142440403022423132
643241452001320204
72501365124353525
oct273653360545714
950628525550584
1012907916217292
114127242217938
121545783036064
13728299235a25
14328a6449d84c
15175b703e8147
hexbbd5bc2cbcc

12907916217292 has 48 divisors (see below), whose sum is σ = 23217638973984. Its totient is φ = 6275377152000.

The previous prime is 12907916217253. The next prime is 12907916217307. The reversal of 12907916217292 is 29271261970921.

It is a super-2 number, since 2×129079162172922 (a number of 27 digits) contains 22 as substring.

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, 165038548 + ... + 165116740.

It is an arithmetic number, because the mean of its divisors is an integer number (483700811958).

Almost surely, 212907916217292 is an apocalyptic number.

It is an amenable number.

12907916217292 is a deficient number, since it is larger than the sum of its proper divisors (10309722756692).

12907916217292 is a wasteful number, since it uses less digits than its factorization.

12907916217292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81610 (or 81608 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 58.

The spelling of 12907916217292 in words is "twelve trillion, nine hundred seven billion, nine hundred sixteen million, two hundred seventeen thousand, two hundred ninety-two".

Divisors: 1 2 4 41 82 164 331 662 1324 3041 6082 12164 13571 27142 54284 78193 124681 156386 249362 312772 498724 1006571 2013142 3205913 4026284 6411826 12823652 25881883 41269411 51763766 82538822 103527532 165077644 237784913 475569826 951139652 1061157203 2122314406 4244628812 9749181433 19498362866 38996725732 78706806203 157413612406 314827224812 3226979054323 6453958108646 12907916217292