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128960131417 = 1326936877361
BaseRepresentation
bin111100000011010011…
…1110111000101011001
3110022212110020110002121
41320012213313011121
54103102243201132
6135124331101241
712213516013345
oct1700647670531
9408773213077
10128960131417
114a7676a5507
1220bb05a1821
13c212618890
146355340625
15354b909497
hex1e069f7159

128960131417 has 8 divisors (see below), whose sum is σ = 139396428360. Its totient is φ = 118597589760.

The previous prime is 128960131397. The next prime is 128960131423. The reversal of 128960131417 is 714131069821.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19120252176 + 109839879241 = 138276^2 + 331421^2 .

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

It is a de Polignac number, because none of the positive numbers 2k-128960131417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128960131477) 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, 18435184 + ... + 18442177.

It is an arithmetic number, because the mean of its divisors is an integer number (17424553545).

Almost surely, 2128960131417 is an apocalyptic number.

It is an amenable number.

128960131417 is a deficient number, since it is larger than the sum of its proper divisors (10436296943).

128960131417 is a wasteful number, since it uses less digits than its factorization.

128960131417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36877643.

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 128960131417 in words is "one hundred twenty-eight billion, nine hundred sixty million, one hundred thirty-one thousand, four hundred seventeen".

Divisors: 1 13 269 3497 36877361 479405693 9920010109 128960131417