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12201451460 = 2251155461143
BaseRepresentation
bin10110101110100001…
…10101111111000100
31011111100011221210122
423113100311333010
5144442032421320
65334423241112
7611235424532
oct132720657704
934440157718
1012201451460
1151a1446090
1224462a9198
1311c5b09683
1483a69b152
154b62b4d25
hex2d7435fc4

12201451460 has 24 divisors (see below), whose sum is σ = 27952416576. Its totient is φ = 4436891360.

The previous prime is 12201451439. The next prime is 12201451477. The reversal of 12201451460 is 6415410221.

It is a super-2 number, since 2×122014514602 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27730352 + ... + 27730791.

It is an arithmetic number, because the mean of its divisors is an integer number (1164684024).

Almost surely, 212201451460 is an apocalyptic number.

12201451460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12201451460 is an abundant number, since it is smaller than the sum of its proper divisors (15750965116).

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

12201451460 is a wasteful number, since it uses less digits than its factorization.

12201451460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55461163 (or 55461161 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 12201451460 its reverse (6415410221), we get a palindrome (18616861681).

The spelling of 12201451460 in words is "twelve billion, two hundred one million, four hundred fifty-one thousand, four hundred sixty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 55461143 110922286 221844572 277305715 554611430 610072573 1109222860 1220145146 2440290292 3050362865 6100725730 12201451460