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12695270660 = 22519311077697
BaseRepresentation
bin10111101001011001…
…00111010100000100
31012202202101120101122
423310230213110010
5201444442130120
65455423413112
7626413006622
oct136454472404
935682346348
1012695270660
115425170826
122563754198
131274209397
148860c4512
154e480ba25
hex2f4b27504

12695270660 has 48 divisors (see below), whose sum is σ = 28968522240. Its totient is φ = 4655646720.

The previous prime is 12695270639. The next prime is 12695270671. The reversal of 12695270660 is 6607259621.

It is a super-2 number, since 2×126952706602 (a number of 21 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, 527069 + ... + 550628.

It is an arithmetic number, because the mean of its divisors is an integer number (603510880).

Almost surely, 212695270660 is an apocalyptic number.

12695270660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12695270660 is an abundant number, since it is smaller than the sum of its proper divisors (16273251580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12695270660 is a wasteful number, since it uses less digits than its factorization.

12695270660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077756 (or 1077754 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 12695270660 in words is "twelve billion, six hundred ninety-five million, two hundred seventy thousand, six hundred sixty".

Divisors: 1 2 4 5 10 19 20 31 38 62 76 95 124 155 190 310 380 589 620 1178 2356 2945 5890 11780 1077697 2155394 4310788 5388485 10776970 20476243 21553940 33408607 40952486 66817214 81904972 102381215 133634428 167043035 204762430 334086070 409524860 634763533 668172140 1269527066 2539054132 3173817665 6347635330 12695270660