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12650885897 = 132320323371
BaseRepresentation
bin10111100100000110…
…10011001100001001
31012122122212120221112
423302003103030021
5201402111322042
65451200220105
7625333520156
oct136203231411
935578776845
1012650885897
115402105901
12255090a635
131267c68b00
1488024d22d
154e0990982
hex2f20d3309

12650885897 has 12 divisors (see below), whose sum is σ = 13703751504. Its totient is φ = 11673595440.

The previous prime is 12650885893. The next prime is 12650885917. The reversal of 12650885897 is 79858805621.

It is not a de Polignac number, because 12650885897 - 22 = 12650885893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12650885893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 529622 + ... + 552992.

It is an arithmetic number, because the mean of its divisors is an integer number (1141979292).

Almost surely, 212650885897 is an apocalyptic number.

It is an amenable number.

12650885897 is a deficient number, since it is larger than the sum of its proper divisors (1052865607).

12650885897 is a wasteful number, since it uses less digits than its factorization.

12650885897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26600 (or 26587 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 59.

The spelling of 12650885897 in words is "twelve billion, six hundred fifty million, eight hundred eighty-five thousand, eight hundred ninety-seven".

Divisors: 1 13 169 3203 23371 41639 303823 541307 3949699 74857313 973145069 12650885897