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12512141205 = 352935418123
BaseRepresentation
bin10111010011100100…
…00001111110010101
31012021222210122000020
423221302001332111
5201111102004310
65425322335353
7622030305534
oct135162017625
935258718006
1012512141205
115340860973
12251235a559
1312452aac65
14869a5431b
154d36d6170
hex2e9c81f95

12512141205 has 32 divisors (see below), whose sum is σ = 20718149760. Its totient is φ = 6440421120.

The previous prime is 12512141189. The next prime is 12512141207. The reversal of 12512141205 is 50214121521.

It is a happy number.

It is not a de Polignac number, because 12512141205 - 24 = 12512141189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12512141207) 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, 1536274 + ... + 1544396.

It is an arithmetic number, because the mean of its divisors is an integer number (647442180).

Almost surely, 212512141205 is an apocalyptic number.

12512141205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12512141205 is a deficient number, since it is larger than the sum of its proper divisors (8206008555).

12512141205 is a wasteful number, since it uses less digits than its factorization.

12512141205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11701.

The product of its (nonzero) digits is 800, while the sum is 24.

Adding to 12512141205 its reverse (50214121521), we get a palindrome (62726262726).

The spelling of 12512141205 in words is "twelve billion, five hundred twelve million, one hundred forty-one thousand, two hundred five".

Divisors: 1 3 5 15 29 87 145 435 3541 8123 10623 17705 24369 40615 53115 102689 121845 235567 308067 513445 706701 1177835 1540335 3533505 28763543 86290629 143817715 431453145 834142747 2502428241 4170713735 12512141205