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87980237141 is a prime number
BaseRepresentation
bin101000111110000000…
…1111110000101010101
322102002111100010100112
41101330001332011111
52420140420042031
6104230105452405
76233142451046
oct1217401760525
9272074303315
1087980237141
1134348606395
12150744a1105
1383b1548724
14438897a8cd
15244ddb362b
hex147c07e155

87980237141 has 2 divisors, whose sum is σ = 87980237142. Its totient is φ = 87980237140.

The previous prime is 87980237119. The next prime is 87980237153. The reversal of 87980237141 is 14173208978.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59462822500 + 28517414641 = 243850^2 + 168871^2 .

It is a cyclic number.

It is not a de Polignac number, because 87980237141 - 222 = 87976042837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87980237141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87980237441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43990118570 + 43990118571.

It is an arithmetic number, because the mean of its divisors is an integer number (43990118571).

Almost surely, 287980237141 is an apocalyptic number.

It is an amenable number.

87980237141 is a deficient number, since it is larger than the sum of its proper divisors (1).

87980237141 is an equidigital number, since it uses as much as digits as its factorization.

87980237141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 50.

The spelling of 87980237141 in words is "eighty-seven billion, nine hundred eighty million, two hundred thirty-seven thousand, one hundred forty-one".