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87648121441 = 6471291104933
BaseRepresentation
bin101000110100000111…
…1000011001001100001
322101020100101220021001
41101220033003021201
52414000404341231
6104133123232001
76222000511516
oct1215017031141
9271210356231
1087648121441
1134198096a01
1214ba1218601
13835a7b496a
14435680730d
15242eb5db61
hex14683c3261

87648121441 has 8 divisors (see below), whose sum is σ = 87852423744. Its totient is φ = 87444032880.

The previous prime is 87648121423. The next prime is 87648121459. The reversal of 87648121441 is 14412184678.

It is an interprime number because it is at equal distance from previous prime (87648121423) and next prime (87648121459).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87648121441 - 29 = 87648120929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87648121391 and 87648121400.

It is not an unprimeable number, because it can be changed into a prime (87648121471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 782811 + ... + 887743.

It is an arithmetic number, because the mean of its divisors is an integer number (10981552968).

Almost surely, 287648121441 is an apocalyptic number.

It is an amenable number.

87648121441 is a deficient number, since it is larger than the sum of its proper divisors (204302303).

87648121441 is a wasteful number, since it uses less digits than its factorization.

87648121441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106871.

The product of its digits is 344064, while the sum is 46.

The spelling of 87648121441 in words is "eighty-seven billion, six hundred forty-eight million, one hundred twenty-one thousand, four hundred forty-one".

Divisors: 1 647 1291 104933 835277 67891651 135468503 87648121441