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12665062630 = 2511373111809
BaseRepresentation
bin10111100101110010…
…11000010011100110
31012200122112211202201
423302321120103212
5201414224001010
65452424125114
7625565153563
oct136271302346
935618484681
1012665062630
11540a109010
12255560679a
13126ab907cc
1488209d86a
154e1d4123a
hex2f2e584e6

12665062630 has 32 divisors (see below), whose sum is σ = 25541736480. Its totient is φ = 4481003520.

The previous prime is 12665062603. The next prime is 12665062699. The reversal of 12665062630 is 3626056621.

It is a super-2 number, since 2×126650626302 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 12665062630.

It is a congruent number.

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, 1551835 + ... + 1559974.

It is an arithmetic number, because the mean of its divisors is an integer number (798179265).

Almost surely, 212665062630 is an apocalyptic number.

12665062630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12665062630 is an abundant number, since it is smaller than the sum of its proper divisors (12876673850).

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

12665062630 is a wasteful number, since it uses less digits than its factorization.

12665062630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3111864.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 12665062630 in words is "twelve billion, six hundred sixty-five million, sixty-two thousand, six hundred thirty".

Divisors: 1 2 5 10 11 22 37 55 74 110 185 370 407 814 2035 4070 3111809 6223618 15559045 31118090 34229899 68459798 115136933 171149495 230273866 342298990 575684665 1151369330 1266506263 2533012526 6332531315 12665062630