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12690919373 = 11171131274729
BaseRepresentation
bin10111101000111000…
…00000111111001101
31012202110012111112212
423310130000333031
5201442333404443
65455150240205
7626331014636
oct136434007715
935673174485
1012690919373
115422769620
1225621b6065
131273344962
148856b088d
154e424c618
hex2f4700fcd

12690919373 has 32 divisors (see below), whose sum is σ = 14908354560. Its totient is φ = 10675445760.

The previous prime is 12690919349. The next prime is 12690919421. The reversal of 12690919373 is 37391909621.

It is a cyclic number.

It is not a de Polignac number, because 12690919373 - 28 = 12690919117 is a prime.

It is a super-2 number, since 2×126909193732 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12690919333) 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, 2681273 + ... + 2686001.

It is an arithmetic number, because the mean of its divisors is an integer number (465886080).

Almost surely, 212690919373 is an apocalyptic number.

It is an amenable number.

12690919373 is a deficient number, since it is larger than the sum of its proper divisors (2217435187).

12690919373 is a wasteful number, since it uses less digits than its factorization.

12690919373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4997.

The product of its (nonzero) digits is 551124, while the sum is 50.

The spelling of 12690919373 in words is "twelve billion, six hundred ninety million, nine hundred nineteen thousand, three hundred seventy-three".

Divisors: 1 11 17 113 127 187 1243 1397 1921 2159 4729 14351 21131 23749 52019 80393 157861 243967 534377 600583 884323 2683637 5878147 6606413 9084409 10209911 67865879 99928499 112309021 746524669 1153719943 12690919373