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108396872761 = 179941641413
BaseRepresentation
bin110010011110011110…
…1010000010000111001
3101100210100211200020011
41210330331100100321
53233444044412021
6121444041101521
710555114134052
oct1447475202071
9340710750204
10108396872761
1141a75232971
1219011a878a1
13a2b633a8c8
145364317729
152c464cbde1
hex193cf50439

108396872761 has 8 divisors (see below), whose sum is σ = 114784883784. Its totient is φ = 102010164480.

The previous prime is 108396872743. The next prime is 108396872783. The reversal of 108396872761 is 167278693801.

It can be written as a sum of positive squares in 4 ways, for example, as 406425600 + 107990447161 = 20160^2 + 328619^2 .

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 108396872761 - 217 = 108396741689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 108396872696 and 108396872705.

It is not an unprimeable number, because it can be changed into a prime (108396872711) 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, 151710 + ... + 489703.

It is an arithmetic number, because the mean of its divisors is an integer number (14348110473).

Almost surely, 2108396872761 is an apocalyptic number.

It is an amenable number.

108396872761 is a deficient number, since it is larger than the sum of its proper divisors (6388011023).

108396872761 is an equidigital number, since it uses as much as digits as its factorization.

108396872761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651371.

The product of its (nonzero) digits is 6096384, while the sum is 58.

The spelling of 108396872761 in words is "one hundred eight billion, three hundred ninety-six million, eight hundred seventy-two thousand, seven hundred sixty-one".

Divisors: 1 17 9941 168997 641413 10904021 6376286633 108396872761