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48969423217 = 1121331131229
BaseRepresentation
bin101101100110110011…
…100001100101110001
311200101202121110001101
4231212303201211301
51300242133020332
634255104404401
73352336141501
oct554663414561
9150352543041
1048969423217
1119849a65500
1295a7916701
1348053b8190
142527903a01
151419173ae7
hexb66ce1971

48969423217 has 12 divisors (see below), whose sum is σ = 57966350260. Its totient is φ = 41093220960.

The previous prime is 48969423163. The next prime is 48969423247. The reversal of 48969423217 is 71232496984.

It can be written as a sum of positive squares in 2 ways, for example, as 31672964961 + 17296458256 = 177969^2 + 131516^2 .

It is a de Polignac number, because none of the positive numbers 2k-48969423217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (48969423247) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 15564042 + ... + 15567187.

Almost surely, 248969423217 is an apocalyptic number.

It is an amenable number.

48969423217 is a deficient number, since it is larger than the sum of its proper divisors (8996927043).

48969423217 is a wasteful number, since it uses less digits than its factorization.

48969423217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31131264 (or 31131253 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 55.

The spelling of 48969423217 in words is "forty-eight billion, nine hundred sixty-nine million, four hundred twenty-three thousand, two hundred seventeen".

Divisors: 1 11 13 121 143 1573 31131229 342443519 404705977 3766878709 4451765747 48969423217