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12520238609211 = 326380811963679
BaseRepresentation
bin1011011000110001100001…
…0111111111001100111011
31122022220220221210200120220
42312030120113333030323
53120112422040443321
642343415044551123
72431362120146424
oct266143027771473
948286827720526
1012520238609211
113a97892324a13
1214a260a6b24a3
136ca86579a068
14313da8a7a64b
1516aa307039c6
hexb63185ff33b

12520238609211 has 16 divisors (see below), whose sum is σ = 16759207618560. Its totient is φ = 8314055557760.

The previous prime is 12520238609159. The next prime is 12520238609213. The reversal of 12520238609211 is 11290683202521.

It is a cyclic number.

It is not a de Polignac number, because 12520238609211 - 26 = 12520238609147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12520238609213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5394070 + ... + 7357748.

It is an arithmetic number, because the mean of its divisors is an integer number (1047450476160).

Almost surely, 212520238609211 is an apocalyptic number.

12520238609211 is a deficient number, since it is larger than the sum of its proper divisors (4238969009349).

12520238609211 is a wasteful number, since it uses less digits than its factorization.

12520238609211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972026.

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 12520238609211 in words is "twelve trillion, five hundred twenty billion, two hundred thirty-eight million, six hundred nine thousand, two hundred eleven".

Divisors: 1 3 263 789 8081 24243 1963679 2125303 5891037 6375909 516447577 1549342731 15868489999 47605469997 4173412869737 12520238609211