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12255357457 = 7295973107131
BaseRepresentation
bin10110110100111100…
…11110101000010001
31011122002121122221001
423122132132220101
5200044332414312
65344030502001
7612461551060
oct133236365021
934562548831
1012255357457
1152199144a2
122460364901
131204031905
148438d01d7
154badb2057
hex2da79ea11

12255357457 has 64 divisors (see below), whose sum is σ = 15191193600. Its totient is φ = 9667607040.

The previous prime is 12255357431. The next prime is 12255357479. The reversal of 12255357457 is 75475355221.

It is not a de Polignac number, because 12255357457 - 227 = 12121139729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12255357487) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 93552282 + ... + 93552412.

It is an arithmetic number, because the mean of its divisors is an integer number (237362400).

Almost surely, 212255357457 is an apocalyptic number.

It is an amenable number.

12255357457 is a deficient number, since it is larger than the sum of its proper divisors (2935836143).

12255357457 is a wasteful number, since it uses less digits than its factorization.

12255357457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406.

The product of its digits is 1470000, while the sum is 46.

The spelling of 12255357457 in words is "twelve billion, two hundred fifty-five million, three hundred fifty-seven thousand, four hundred fifty-seven".

Divisors: 1 7 29 59 73 107 131 203 413 511 749 917 1711 2117 3103 3799 4307 6313 7729 7811 9563 11977 14017 14819 21721 26593 30149 44191 54103 54677 66941 98119 124903 183077 224141 226519 277327 406493 460849 564217 827003 874321 1023241 1281539 1568987 1585633 1941289 2845451 3225943 3949519 5789021 7162687 13364621 16362293 23983087 29673989 60371219 93552347 114536051 167881609 207717923 422598533 1750765351 12255357457